Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad68e9d0151112a9…

MALICIOUS

PDF

72.0 KB Created: 2021-03-13 16:16:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 33cf255c40aece84d82167cf615d4ded SHA-1: 918b505c9537c87d996fb6e4164eefef709e6570 SHA-256: ad68e9d0151112a959e39439076db39c0e2c1064c150f8ba21c7510032554280
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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=bmw+e46+manual+gearbox+for+sale PDF link annotation
    • http://bit7.top/bujumekegod3gk.pdfIn PDF document text
    • https://cdn.sqhk.co/birenejar/hdVjfig/fixoferovolokefogaf.pdfIn PDF document text
    • http://gaydating.world/kuzamedidu147p.pdfIn PDF document text
    • http://freefire-gifts.com/yowhatsapp_apk_2018_ultima_version6vjb7.pdfIn PDF document text
    • http://otomail.business/manual_for_whirlpool_refrigerator_wrf560seymu5ide.pdfIn PDF document text
    • https://cdn.sqhk.co/wekababu/7hfbibB/call_of_duty_warzone_zombies_end_date.pdfIn PDF document text
    • http://wei-nmvc.com/rags_to_riches_game_social_studiesblg1c.pdfIn PDF document text
    • http://eroganoficial.site/the_wretched_of_the_earth_book_cover3ygwk.pdfIn PDF document text
    • http://copyrightproblem.com/253670031477nimg.pdfIn PDF document text
    • http://stc-l.ru/bootyful_beginnings5wvdl.pdfIn PDF document text
    • https://cdn.sqhk.co/wenejusuzixe/fTzhgKf/xenamuwas.pdfIn PDF document text
    • http://newyearshop.site/subutisogowuni8kk.pdfIn PDF document text
    • http://gifozazupu.iblogger.org/57285907586.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/94df1124-097b-4d17-82a4-2e475c4abd47/seth_godin_the_dip_audiobook.pdfIn PDF document text
    • https://691dfa98-c543-4342-b77d-a3d7fbf094aa.filesusr.com/ugd/d55835_3d8231b2daee4fb1b94b7e6bd8770037.pdf?index=trueIn PDF document text
    • https://29159626-56e2-4eb2-a8c1-eb081f451e44.filesusr.com/ugd/a58502_bbf00484a5eb459b8f9d7b76716ebd9c.pdf?index=trueIn PDF document text
    • http://wiwugaku.epizy.com/bertie_botts_box_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e4c7ea2-4712-4b4e-9a03-74d78e2d0b96/levalulu.pdfIn PDF document text
    • http://nunivigel.epizy.com/74474317753.pdfIn PDF document text
    • http://perezibef.rf.gd/the_endocrine_system_incorporates_feedback_mechanisms.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD86 5432 bytes
SHA-256: f7d4bd7b827f85c4904c0dfed30312b58bc4a1db8b5a43061a7177fcbe4e52c2
font_01_sfnt_off0000dffa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFA 10808 bytes
SHA-256: 7e9068fe057afd956a35f03e3e8ebfa6d10aa741f9dcfdb68455dd44293580fb
font_02_sfnt_off000104d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104D4 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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