Malicious PDF — malware analysis report

Static analysis result for SHA-256 608f72e6c1f85ece…

MALICIOUS

PDF

102.2 KB Created: 2021-02-27 02:10:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: d1c47d2dfa500d4bfe2c4bd57cfedaa0 SHA-1: be86e1be8670be07fcc1a2dccc9bc5772e9c3fb9 SHA-256: 608f72e6c1f85ecea0025e4223d3fac3bb1486519be6c3837270470b94bb3122
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many of which point to disposable domains and are likely part of a link farm designed to redirect users to phishing or malware distribution sites. The document body, though heavily obfuscated, suggests a lure related to 'magic chef furnace owners manuals', which is a common tactic to entice users to click on malicious links.

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/aws?utm_term=magic+chef+furnace+owners+manuals PDF link annotation
    • http://tgesheff.xyz/twilight_2013_tamil_dubbed_movies_download_tamilrockers_2012hbc19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392199/normal_5fee7f6ac2f9b.pdfIn PDF document text
    • https://cdn.sqhk.co/ketejeti/dbBz6IH/lowofewipalap.pdfIn PDF document text
    • http://tryne.xyz/gestational_diabetes_management_guidelinesj8jht.pdfIn PDF document text
    • http://covidcapsule.world/burrow_and_bee_cot_sheetsptt7k.pdfIn PDF document text
    • http://sayseedokg.com/35992036988nbiv5.pdfIn PDF document text
    • http://wrinklestiltskin.com/93635074548lcwv4.pdfIn PDF document text
    • http://esagafow.fun/process_flow_chart_ppt_template_freei8pnc.pdfIn PDF document text
    • http://naturalik.fun/xasewapudozomixixuzafatuwubn5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473963/normal_6021a2d8f198f.pdfIn PDF document text
    • http://6gusevshop.website/zumimisadosijowazazufopkcmu.pdfIn PDF document text
    • http://uose.xyz/gi_sheet_gauge_to_mm_conversionkmsc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_60119eacdf68c.pdfIn PDF document text
    • http://alternativeinfluencenetwork.net/jio_phone_play_store_gamesrx0o3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452612/normal_5fff46f75429b.pdfIn PDF document text
    • http://autobaff.xyz/btc_full_form_in_payment_mode33vyl.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489838/normal_6035743670331.pdfIn PDF document text
    • http://idealica-ituficiale.website/keith_haring_la_danse_multicoloregmpbe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001516d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1516D 5392 bytes
SHA-256: 34a82dce3228a2a9712857fed74073343ba0b06c27831a9ed9629bdb5f989c7d
font_01_sfnt_off000163be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163BE 11660 bytes
SHA-256: 6d5d169ba36eb959c3b1ad989ccadc69d53fd9d5ee39214c1cc8b692ec132659

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