PDF malware analysis — malicious · dd4d5d88f7375823

MALICIOUS

PDF

85.8 KB Created: 2021-03-18 18:41:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: b270e02bb9c1ee07ba1754ba97e9abaa SHA-1: 7ca9afce408e366d27a8d1ad7886f671937f1694 SHA-256: dd4d5d88f737582336c985ea723603b8ea1fcd59abda89eb1722fc7e4980f017

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous external links, with a significant number pointing to potentially malicious or SEO-spam related domains, as indicated by the 'PDF_SEO_LINK_FARM' heuristic. The primary URL, 'https://bologen.ru/award?keyword=edit+pdf+text+box+size', suggests a lure to a website that may host malicious content or phishing pages. While no scripts were explicitly extracted, the ML classifier and ClamAV detection strongly indicate malicious intent, likely involving the exploitation of PDF vulnerabilities or the delivery of further payloads via the embedded links.

Machine Learning

Nyx PDF Classifier malicious score 0.9925

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://bologen.ru/award?keyword=edit+pdf+text+box+size
- https://cdn.sqhk.co/kivipemo/uhaPgjX/fire_alarm_testing_report_format.pdf
- https://gixawixo.weebly.com/uploads/1/3/4/3/134322292/bewolinitufixutuka.pdf
- https://cdn.sqhk.co/retirijozi/Mic3rjd/get_real_instagram_followers_cheap.pdf
- https://xubegiwemaf.weebly.com/uploads/1/3/5/3/135308842/bofisozaduro_kabozatedezaj.pdf
- http://fimozagori.iblogger.org/68372527778.pdf
- https://ratopavitakam.weebly.com/uploads/1/3/4/4/134460251/sunupawatuxeber_fakevalemoda_jepigefaw_tikoriwe.pdf
- https://cdn.sqhk.co/wibononuve/oywZwjU/vonokuvowadoxulaxupevew.pdf
- https://cdn.sqhk.co/numovasovev/WYohhT7/ikea_breakfast_hours_bloomington_mn.pdf
- https://purolitawi.weebly.com/uploads/1/3/4/8/134894903/181bcf45.pdf
- https://cdn.sqhk.co/joxopejufito/rIjcGjb/squad_rocket_artillery_calculator.pdf
- https://xufujume.weebly.com/uploads/1/3/4/8/134851049/fasusukibe.pdf
- https://cdn.sqhk.co/ruxukulalodi/djeFWhg/pewifepan.pdf
- https://cdn.sqhk.co/vuvupewog/eiaQVjg/pixel_kingdom_mod_apk.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- http://wotonopeg.epizy.com/isocrates_against_the_sophists_perseus.pdf
- https://c6926203-1eb9-401e-9afa-11f61f201807.filesusr.com/ugd/685707_f6abdfc07f204df683f1b13ef7036bd2.pdf?index=true
- https://c1d61d78-9bae-425c-b347-ee91470fe4f1.filesusr.com/ugd/60933b_62d241f2b8b44ef49352d03faa22de8b.pdf?index=true
- https://d4078116-a2d5-466f-97e6-20d899f6ca30.filesusr.com/ugd/576447_5c3d7228337648e9b45a68ab22aefa73.pdf?index=true
- https://0296ecfc-28ae-4fa5-925c-67a25994cace.filesusr.com/ugd/c88839_572d13008ebb4f928c4d0eb2796a3cf7.pdf?index=true
- https://091a8774-b5bd-4fb7-8799-8d1ca0ca44ad.filesusr.com/ugd/8716ab_3e923bccd0914e40a572c8954c8180d4.pdf?index=true
- https://507d1b22-ea03-4061-a262-f79425337ca2.filesusr.com/ugd/a374b9_35154964b961432b824315e9d1e12781.pdf?index=true
- https://b913155d-2712-4fd4-bcc6-651970a8c456.filesusr.com/ugd/e39924_163662235bd24ffbb5ea6ad5fb077342.pdf?index=true
- http://bolunivagoxel.epizy.com/dj_remix_song_tamil.pdf
- https://26bfc7ce-baa4-43a1-9280-72312523cbd3.filesusr.com/ugd/5af86b_b2f2f6508f8e4dbdb0b325cfb628e571.pdf?index=true
- https://c064424b-11a8-4e39-a524-24a74bcd733d.filesusr.com/ugd/54e393_15d717ad0d0d4387995c49d7b079de9f.pdf?index=true
- https://6200e599-3f2f-4e3e-ab45-e6977ed7e777.filesusr.com/ugd/f8de3e_18bfe9e794f94dc0be1e28bf9eade204.pdf?index=true
- http://suwugiborewetel.rf.gd/dell_optiplex_790_network_drivers_windows_7_free_download.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://ns.adobe.com/xap/1.0/rights/
- http://scripts.sil.org/OFL

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000f9aa.bin` `b14425aac65e507d8766c12f86cfb8ef8b2cbe81b676592b54ad0b8250a5749d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF9AA	4596 bytes
`font_01_sfnt_off0001095b.bin` `e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1095B	1800 bytes
`font_02_sfnt_off000111e9.bin` `0e32b275e79f76be261dc160db88af8253ecff201b203d70b7729791a276aeb9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x111E9	12168 bytes
`font_03_sfnt_off00013b07.bin` `a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x13B07	4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.