PDF malware analysis — malicious · 9cb190a86ba2b7c7

MALICIOUS

PDF

76.1 KB Created: 2021-02-24 08:10:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23

MD5: 5e6424e24dbbc6485b353f41d1e2abb5 SHA-1: 57cc0a48026d7e0c373a55c7ed12a169cb0e4f6f SHA-256: 9cb190a86ba2b7c71e45d154bfc5a18642b5342b8bae45b252454267ef430ed7

194 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 7

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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.
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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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://leonvi.ru/wix?keyword=dead+ahead+zombie+warfare+apk+hile PDF link annotation
- https://guvemixekowarov.weebly.com/uploads/1/3/4/6/134686109/354ca0a.pdfIn PDF document text
- http://appletopshop.ru/why_is_my_motion_light_flashingko7pu.pdfIn PDF document text
- https://dodilepu.weebly.com/uploads/1/3/4/4/134444379/bodisudevarive.pdfIn PDF document text
- https://kesiwupi.weebly.com/uploads/1/3/1/4/131407351/0486ab2809a0.pdfIn PDF document text
- https://xafinuwexedigu.weebly.com/uploads/1/3/1/3/131379324/69c37be9b814d5.pdfIn PDF document text
- http://stavki-na-sport.site/4205802629wqpqz.pdfIn PDF document text
- https://dabefetuxof.weebly.com/uploads/1/3/5/3/135320161/ranoduwata.pdfIn PDF document text
- https://lafadulow.weebly.com/uploads/1/3/4/5/134591129/dafodojukone.pdfIn PDF document text
- https://nudegono.weebly.com/uploads/1/3/4/6/134682657/1539464.pdfIn PDF document text
- http://esparks.ru/charlie_s_angels_2019_soundtrack_zipf1y1u.pdfIn PDF document text
- https://jonimewogil.weebly.com/uploads/1/3/1/8/131860125/4253edc58fe.pdfIn PDF document text
- http://patokog.22web.org/incentive_pay_plan_template.pdfIn PDF document text
- https://turakenedonatup.weebly.com/uploads/1/3/4/6/134610331/dutapovezu.pdfIn PDF document text
- https://zejosawazir.weebly.com/uploads/1/3/1/8/131856185/8605183.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- http://mekazejirorarad.epizy.com/dujijarowapazogolowotude.pdfIn PDF document text
- https://s3.amazonaws.com/rufonali/relefowavebodawipodifap.pdfIn PDF document text
- https://s3.amazonaws.com/woxojuxafopuv/shl_verbal_reasoning_test_with_answers.pdfIn PDF document text
- https://s3.amazonaws.com/fevobelijogal/the_riverside_chaucer_oxford_university_press.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e29d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE29D	3296 bytes
SHA-256: `e927760ae55dbda6ccd151bde6fdcd62296a5079f9c0e0b6c49cde2c7f88ebe0`
`font_01_sfnt_off0000ee82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE82	5448 bytes
SHA-256: `87a27313bd9efeeb11a97de8c74ba2626d955b577da16eaacac37e8c08106ea9`
`font_02_sfnt_off000100fb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x100FB	9912 bytes
SHA-256: `5a3cebc5fc5cd84c91621770421dad8711a985fbfe6b9471e0826d4362b4c5d7`

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