Malicious PDF — malware analysis report

Static analysis result for SHA-256 694faf102c8826ba…

MALICIOUS

PDF

75.0 KB Created: 2021-03-23 14:42:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 35b38f9777e90605212270fde0087028 SHA-1: 40e4e9e0b569b373af66d7a0c6aff6647365084d SHA-256: 694faf102c8826ba23d226fbf71fcfdc034db8a6bbe0374621d0192a58f2c88e
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. The document contains a large number of embedded URLs pointing to various domains, suggesting a link farm designed to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and numerous external links strongly suggest an intent to exploit users through redirection, likely for phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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 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://dugedepap.ru/123?utm_term=etta+james+piano+sheet+music PDF link annotation
    • https://cdn.sqhk.co/zixemoliz/gdghhhM/dune_quotes_fear.pdfIn PDF document text
    • https://cdn.sqhk.co/gobisofokox/hs4QNjg/42037304575.pdfIn PDF document text
    • http://legrand-spb.ru/dejodupogajagakopotevowy2wt.pdfIn PDF document text
    • http://omerkatanalp.com/37618520035j5ffj.pdfIn PDF document text
    • http://tixugutag.iblogger.org/59431301885.pdfIn PDF document text
    • https://cdn.sqhk.co/jupozaregu/giCk9ha/battery_charger_portable_target.pdfIn PDF document text
    • http://findattime.com/eheim_auto_feeder_setupm8zp5.pdfIn PDF document text
    • http://belkwigs.com/webixafijew03zj.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/cVgirhf/89150208739.pdfIn PDF document text
    • http://carins.info/lyerla_sheet_metal_heating_air_conditioningrk3rt.pdfIn PDF document text
    • https://cdn.sqhk.co/gizoxemovefi/igjjfjc/claw_electronic_candy_grabber_machine.pdfIn PDF document text
    • http://bioforcecolumbia.site/37640643343z8yad.pdfIn PDF document text
    • https://cdn.sqhk.co/manuguwe/9AhdZCS/xidiwaxaruwitape.pdfIn PDF document text
    • http://blockingscenery.com/wedding_weekend_itinerary_template_wordhvcma.pdfIn PDF document text
    • https://cdn.sqhk.co/komukopa/c1ieggs/rubajuwugewejexoti.pdfIn PDF document text
    • http://bazujubu.iblogger.org/97927174019.pdfIn PDF document text
    • https://cdn.sqhk.co/zuxatotukaru/ghqib7A/poxiwimumu.pdfIn PDF document text
    • http://ogranicbio.fun/616313227855ns9s.pdfIn PDF document text
    • https://cdn.sqhk.co/tefegegesuxe/cggggja/duck_hunt_pixel_art.pdfIn PDF document text
    • https://cdn.sqhk.co/kuxaroposa/eXGBzha/analisis_foda_estrategias_ejemplo.pdfIn PDF document text
    • https://cdn.sqhk.co/xotarebizak/jcb4hei/87401109367.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rigozapovi.epizy.com/81130343771.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_off0000e956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE956 5076 bytes
SHA-256: 27337a56d7be9a27e1cda73d825616ab233b9a392428fb99f6ae92b7dcb9d298
font_01_sfnt_off0000fa81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA81 10724 bytes
SHA-256: bee80115c438158b97e196c39b7ef19cf21dcc9c78c9e375e2a7d1a33dcefdf2

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