Malicious PDF — malware analysis report

Static analysis result for SHA-256 faf5cc1841cad10c…

MALICIOUS

PDF

86.7 KB Created: 2021-03-15 01:48:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 69ef4c18a096650caf4d373f86550e95 SHA-1: 92ed6c97c78607543cc26cb821e80e37c7b166fc SHA-256: faf5cc1841cad10cf142aa1b48bd5def094a09a77b3417626e5e72f0f3a147e6
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 0.9993

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://druttle.ru/wix?keyword=my+own+nursing+philosophy PDF link annotation
    • https://worojipe.weebly.com/uploads/1/3/1/3/131382243/7cf512472.pdfIn PDF document text
    • http://cafe-cok.ru/relations_functions_domain_and_range_worksheet_answers968i7.pdfIn PDF document text
    • https://zaxixeresez.weebly.com/uploads/1/3/1/8/131871416/3740355.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/thigjdp/gotudufozamanevawodeje.pdfIn PDF document text
    • http://ttttrrrr.space/landing_page_template_with_wixscgrf.pdfIn PDF document text
    • https://foderojev.weebly.com/uploads/1/3/4/0/134041652/4ff6c194a.pdfIn PDF document text
    • http://bcpreactiva-enlinea.com/mr_coffee_coffee_maker_ratings6tzb4.pdfIn PDF document text
    • https://wezoduvum.weebly.com/uploads/1/3/4/0/134096245/betegemekikel_mozufik_pigogelasa.pdfIn PDF document text
    • https://wijirejilape.weebly.com/uploads/1/3/2/8/132816202/53d851fa0193.pdfIn PDF document text
    • https://cdn.sqhk.co/berazanoga/qCfjdgi/city_driving_3d_zuuks_games.pdfIn PDF document text
    • https://cdn.sqhk.co/laxegipo/hjjfijR/89696455423.pdfIn PDF document text
    • https://liwifaxuje.weebly.com/uploads/1/3/0/8/130874244/6caa8aa9bacb2.pdfIn PDF document text
    • https://cdn.sqhk.co/bitomasijelo/jjZXBJH/51171035554.pdfIn PDF document text
    • https://cdn.sqhk.co/wejafivelij/TjcztKE/fokijez.pdfIn PDF document text
    • http://endi-itali.space/can_you_buy_back_mortgaged_property_in_monopoly2tesi.pdfIn PDF document text
    • https://tonituligavu.weebly.com/uploads/1/3/4/8/134884188/jijuvaxawevolemobonu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ad8e1b6-74b5-499c-aa34-08b286be988b/roland_td_10_memory_card.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/3676671182.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/513466bc-e936-407f-9d92-6638e3aceaa0/peugeot_103_sp__vendre.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d96b9c1-13ef-46f4-815b-ffcdfcffd224/susaxunelaposodiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd2d78ad-67e8-4ba8-be5c-30ac66299b07/95549614730.pdfIn PDF document text
    • https://s3.amazonaws.com/xukanomarexumu/punujole.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/65465006558.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/fixekanegod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66005b9c-7f49-4575-829a-db25f9ed5853/remilutofegokimige.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11640 5072 bytes
SHA-256: 8c394aa39de935467639eca72701c0857b2af1a6d8bf9f2c1ab0d6e6c315dce8
font_01_sfnt_off000127a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127A6 11336 bytes
SHA-256: 402fa11265328fe91fd588c26abfdfc7fd4a91d1451c62de4299345d7ab2ded6

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