PDF malware analysis — malicious · f010a208eeb8c1e8

MALICIOUS

PDF

82.7 KB Created: 2021-03-21 00:54:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 82aaa51f16c8fd0ac9a1c2099e553d1b SHA-1: de6ac617561595b63797d6b1687136516c386ca3 SHA-256: f010a208eeb8c1e82c4612fbcc0888089beeb56f83c861efa180e5f27a51c8eb

186 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains a large number of external links, a technique often used for SEO manipulation or to host phishing content. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

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
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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://resalured.ru/wix?keyword=wills+eye+manual+7th+edition+citation
- https://marikikugawu.weebly.com/uploads/1/3/5/3/135326377/panenotilomusobutu.pdf
- https://cdn.sqhk.co/kiraxozi/WiDhija/bomb_chicken_game.pdf
- https://kajabukege.weebly.com/uploads/1/3/1/3/131379037/finere.pdf
- https://sojomirolasa.weebly.com/uploads/1/3/4/3/134325131/3478952.pdf
- https://vugevosuza.weebly.com/uploads/1/3/5/3/135328642/2f0c5648e96220.pdf
- https://static.s123-cdn-static.com/uploads/4445324/normal_5ffa5124042a0.pdf
- https://static.s123-cdn-static.com/uploads/4457302/normal_5fcd3642c52f4.pdf
- https://cdn.sqhk.co/zativojor/eiifPii/47222005532.pdf
- https://lirejodeju.weebly.com/uploads/1/3/4/6/134628820/5693400.pdf
- https://static.s123-cdn-static.com/uploads/4505326/normal_5feb4045d8523.pdf
- https://cdn.sqhk.co/rabataxuvax/Tijhegj/cube_blast_master.pdf
- https://cdn-cms.f-static.net/uploads/4411231/normal_5fd651dd171eb.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- http://www.daltonmaag.com/
- https://s3.amazonaws.com/lekezaru/63627248811.pdf
- https://uploads.strikinglycdn.com/files/eefb33e3-cfa9-46b2-a6dc-cde3dfe17840/fajazi.pdf
- https://uploads.strikinglycdn.com/files/89629505-148b-468e-a518-3bf0bb730bad/gometewipexiwiduduti.pdf
- https://cb6d8354-940b-4e05-9f1d-0150973ab277.filesusr.com/ugd/882da0_3c161709e8274ebfbd767df30dbbede7.pdf?index=true
- https://fd0ef26f-7b8f-4c91-b3b2-19f7ec93487a.filesusr.com/ugd/4174bf_b59e60fe932142efb7524c5ef592d10e.pdf?index=true
- https://uploads.strikinglycdn.com/files/fe2b4ca9-66ba-40de-9d99-616dce8eea00/62476512881.pdf
- https://s3.amazonaws.com/suxuzubojut/watercolor_splash_brushes_photoshop_free.pdf
- https://s3.amazonaws.com/winumigutam/19460521763.pdf
- https://uploads.strikinglycdn.com/files/794efe5e-4cd1-4c06-be6d-8203a1193751/are_carquest_gold_brake_pads_good.pdf
- https://s3.amazonaws.com/rakabexozu/asus_rt_n66r_firmware.pdf
- https://s3.amazonaws.com/waxapoz/isaac_afterbirth_item_sheet.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_off0000ea0c.bin` `3dfcbc0e6d79717bd74fc6977513e5e9911813312be5551f377a552c2f3f4120`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA0C	5160 bytes
`font_01_sfnt_off0000fb73.bin` `a826cd15759f1829322e48458c95f716dcebf2f8ccfe96592ead52aedcdb4a70`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xFB73	2920 bytes
`font_02_sfnt_off0001070a.bin` `2cf657a95f79c35535e675de3d2e8ddfa64b03b76efe0d299885f4198569bff6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1070A	11504 bytes
`font_03_sfnt_off00012e51.bin` `cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12E51	4324 bytes

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