Malicious PDF — malware analysis report

Static analysis result for SHA-256 60d211cf17c2c284…

MALICIOUS

PDF

77.2 KB Created: 2021-03-03 00:21:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 05e7e49363d0914654b1ae012a1e32e7 SHA-1: f8b8075ec2ee4e8775e12690f72a52dc8b184489 SHA-256: 60d211cf17c2c28444d92db22737eaa56841e58b91e1f04cf506a4556b322faf
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 0.9998

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://seumenha.ru/strik?utm_term=canadian+red+cross+first+aid+kit+contents PDF link annotation
    • http://zoom-omsk.ru/cognos_analytics_active_report_samplesoj3w8.pdfIn PDF document text
    • http://healsmall.space/xifanugosedevokixefupoxunzdjn2.pdfIn PDF document text
    • http://shtangelkipokupkiitd.online/how_do_covalent_bonds_form_atomsvwqon.pdfIn PDF document text
    • http://help-bluebadgecustomer.com/how_are_hydrogen_bonds_formed_between_water_moleculesfgev7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407313/normal_5fdee02dbf564.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369162/normal_60251a7284e33.pdfIn PDF document text
    • https://cdn.sqhk.co/xiponamoribo/6geifsz/33715717869.pdfIn PDF document text
    • https://sadozilodefizon.weebly.com/uploads/1/3/4/6/134659806/c613e0317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375702/normal_5fd28d60aa94a.pdfIn PDF document text
    • https://pibigetikuke.weebly.com/uploads/1/3/5/3/135387636/sepegunegidudumami.pdfIn PDF document text
    • https://xuxurebero.weebly.com/uploads/1/3/4/6/134673100/332962.pdfIn PDF document text
    • https://cdn.sqhk.co/wanolugago/eIzJihb/75935738138.pdfIn PDF document text
    • https://cdn.sqhk.co/xuteposidobi/jbTji1Z/bubble_level_iphone.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388619/normal_60355d9b8d1f2.pdfIn PDF document text
    • http://shoppermarket.online/porter_cable_fn250b_manuallzwu4.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://s3.amazonaws.com/jobavo/business_incoming_and_outgoing_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/56605023360.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.

FilenameKindSourceSize
font_00_sfnt_off0000e509.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE509 4856 bytes
SHA-256: b520902903b5aacb1794bc0f766861b14c477b9de8b02a3d9522382decd0a10d
font_01_sfnt_off0000f598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF598 10680 bytes
SHA-256: 1cd229f9395e06d4a79d726a9ee9bf87e593d9941f506068af75a2ce7701a963
font_02_sfnt_off000119b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119B0 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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