PDF malware analysis — malicious · 3d3e7e4e114b114a

MALICIOUS

PDF

139.1 KB Created: 2021-05-30 05:33:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 73ed85490b6ba1c3cc5eed415eb04ab4 SHA-1: 9f03b43b4f191ec17178c4c454df0a9e7a9fe218 SHA-256: 3d3e7e4e114b114a3ae118da4fef838f6c79c91b796a617319d7dbd01f58710e

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains heuristics indicating it is a link farm and has been flagged as malicious by ML classifiers and ClamAV. The embedded content, though heavily obfuscated, suggests a lure related to a "brawl stars hack apk". The primary URL points to a domain associated with phishing and malware distribution, likely serving as the initial download point for the payload.

Machine Learning

Nyx PDF Classifier malicious score 0.8430

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://jottigo.ru/strik?utm_term=brawl+stars+hack+apk+16.+1767
- https://cdn-cms.f-static.net/uploads/4414672/normal_602f567002703.pdf
- https://puwikopigab.weebly.com/uploads/1/3/1/1/131163601/9861506.pdf
- https://static.s123-cdn-static.com/uploads/4368984/normal_5fc9d7110fb5e.pdf
- https://cdn-cms.f-static.net/uploads/4403819/normal_6021e9c01025e.pdf
- https://tibiwurab.weebly.com/uploads/1/3/2/6/132695994/348900.pdf
- https://static.s123-cdn-static.com/uploads/4387702/normal_5fcf59c8e5957.pdf
- https://novomegaweg.weebly.com/uploads/1/3/4/7/134738931/2305044.pdf
- https://cdn-cms.f-static.net/uploads/4374851/normal_5fe9090bcbec1.pdf
- https://static.s123-cdn-static.com/uploads/4405674/normal_6002f2d4b953b.pdf
- https://cdn-cms.f-static.net/uploads/4466368/normal_601b04f72f549.pdf
- https://cdn-cms.f-static.net/uploads/4383467/normal_6010446669260.pdf
- https://sumigixutaruxaj.weebly.com/uploads/1/3/4/7/134748626/38003d35.pdf
- https://ximixejolulozo.weebly.com/uploads/1/3/4/3/134351986/9202025.pdf
- https://static.s123-cdn-static-d.com/uploads/4443362/normal_60b03d623e945.pdf
- https://cdn-cms.f-static.net/uploads/4453743/normal_604f14061d3c6.pdf
- https://static.s123-cdn-static.com/uploads/4421210/normal_5fc6775736e74.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://fedorahosted.org/lohit
- http://smc.org.in)MeeraRegularMeera2016SMC7.0.0+20171102Hussain
- http://smc.org.inhttp://smc.org.in
- http://www.indictrans.org
- http://www.opentle.org
- https://uploads.strikinglycdn.com/files/825f7e07-8268-4b4c-af70-0fa8ced514da/nivumagowuwilopobigori.pdf
- https://uploads.strikinglycdn.com/files/a7ee4874-a6e9-49f6-ad82-eab6a1cabe8d/lumoruganutidurotuxiwovud.pdf
- https://uploads.strikinglycdn.com/files/e0d8905e-1ac4-4623-8660-b66dc528f1c6/94045755844.pdf
- https://uploads.strikinglycdn.com/files/17da04b2-5af6-47fc-9c2d-231638fbdee3/how_to_play_21_with_uno_cards.pdf
- https://uploads.strikinglycdn.com/files/e72a40c1-4d78-4225-a7e7-c9a775e419b6/1028748234.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
- https://savannah.gnu.org/projects/freefont/
- http://www.gnu.org/licenses/
- http://www.gnu.org/copyleft/gpl.html
- http://scripts.sil.org/OFL
- http://www.geocities.com/mitra_anirban/hobbies.htmGNU
- http://www.gnu.org/copyleft/gpl.htmRegular
- https://gitlab.com/smc/meera/blob/master/COPYING
- http://www.gnu.org/licenses/lgpl.htmlRegularDanhHong
- http://www.geocities.com/dnhhng
- http://sinhala.sourceforge.net/
- http://sinhala.cvs.sourceforge.net/viewvc/*checkout*/sinhala/sinhala/fonts/CREDITS
- http://www.gnu.org/licenses/gpl-2.0.html
- http://www.gnu.org/licenses/gpl.html
- http://scripts.sil.org

Extracted artifacts 17

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_016_off0001dd07.bin` `511f24356c9cfa0cb561270164dcd905744b8cc3c392e109a9c132e7eb49662d`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x1DD07	19380 bytes
`font_00_sfnt_off0000eebd.bin` `e679725072c74ab1de830ba6dd25101ec2f6d7be962e72d99a133184e56e62d0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEEBD	7916 bytes
`font_01_sfnt_off0001031d.bin` `c83fd9d1b431f7b9dc5f903d49d0aecfddc282b3a5950cb10d6ab18e6e767f35`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1031D	6484 bytes
`font_02_sfnt_off00011981.bin` `9593ea7f7950fe17bcdf074fcba7715261831ba7c30d708a5107941baf180ce8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11981	5544 bytes
`font_03_sfnt_off00012c77.bin` `c206ac4eca120f096112d408dff6b33a2f721090936d80486df636e1cd240fde`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12C77	2656 bytes
`font_04_sfnt_off0001377b.bin` `fbdd9df555c8710fa493947bde41d1b30e4b750f457ece442df516a7dd53c510`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1377B	4140 bytes
`font_05_sfnt_off00014497.bin` `4bb619f7e4c8d10c6650d66271e6db770d7def95493d885be3efe54e7c100c22`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x14497	3048 bytes
`font_06_sfnt_off0001509f.bin` `8de763cc392d555d6555ce28e49a7801ce7361977d5c0c1f0cca23967a7df2d1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1509F	4544 bytes
`font_07_sfnt_off00015ea9.bin` `3702365b3034b9d7945da23b991b5e2ac3f8bb06d1ba3be7e5ba1b5d8dd48c9f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x15EA9	2328 bytes
`font_08_sfnt_off00016967.bin` `7f3a1ef136f36ba68bc36e5bcd31de243dce7f4b60e01c4bc40f508baeb48ca0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16967	2604 bytes
`font_09_sfnt_off0001748a.bin` `e66bd646ff29f48b94a898642357a1d5295b77faffa0bd70eb77acb4aebc9a97`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1748A	2108 bytes
`font_10_sfnt_off00017e2a.bin` `cca5298ad2e89ab0d41cc63a8205340d9321530172a8d5dda1c28d17fa56adaa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17E2A	3840 bytes
`font_11_sfnt_off00018c42.bin` `87016e8933cc862d1d188edfbee698abcff8178ed3d6b510b61737ee02f60284`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x18C42	4336 bytes
`font_12_sfnt_off000199e2.bin` `4910d0177da9f60ecc92c13a34fae8c5c38ffafb9e4e22a3c3fd987548b79157`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x199E2	6148 bytes
`font_13_sfnt_off0001a9cd.bin` `36fa24f581c466a8199ae0f2cabdad0bb4896b5a9f892fc5f1757a1dd2badcc5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1A9CD	17888 bytes
`font_15_sfnt_off0001fe76.bin` `e6a127d4807db9283a7accf384a78a2b0e3b5516854c6cc3c0883f933369f6f8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1FE76	3612 bytes
`font_16_sfnt_off00020c95.bin` `f2ee77ef46d574326e15e5d832115933ac9a59561f08735e614fb36f91e87993`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x20C95	4216 bytes

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