Malicious PDF — malware analysis report

Static analysis result for SHA-256 a74c60197674acda…

MALICIOUS

PDF

133.9 KB Created: 2021-04-03 07:39:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 780e22efe12a96007f3c9ca5b9986045 SHA-1: d2e161c8e082b684b6762866dddbd286e4bce602 SHA-256: a74c60197674acdad7f810f8b8fd6c055d867d466e44f95e466dbec31c048f7c
194 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classification further supports malicious intent. The document body, though heavily obfuscated, appears to contain search terms related to mobile applications, indicating a lure to download potentially unwanted or malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://lozipotod.ru/123?utm_term=my+talking+tom+app++for+android PDF link annotation
    • http://canonsburglake.com/46087307801id92z.pdfIn PDF document text
    • https://bijimuxe.weebly.com/uploads/1/3/4/8/134886115/464b49cd.pdfIn PDF document text
    • https://siwizapetodid.weebly.com/uploads/1/3/4/0/134041585/9850061.pdfIn PDF document text
    • https://rurefidutemajob.weebly.com/uploads/1/3/4/3/134333690/sowito_dukafusebugulax.pdfIn PDF document text
    • https://bolamowoxuwev.weebly.com/uploads/1/3/3/9/133997192/ce2d1.pdfIn PDF document text
    • https://tijozamuworibop.weebly.com/uploads/1/3/1/6/131607374/gonujekisuvuf-giseli.pdfIn PDF document text
    • https://xidumalebuwun.weebly.com/uploads/1/3/4/8/134894794/mudob-xezalatu-petokasabaru-jatujuvofavat.pdfIn PDF document text
    • http://zdsshop.top/rojexiraxwz57.pdfIn PDF document text
    • https://gikoberi.weebly.com/uploads/1/3/0/9/130969260/3afb086f626.pdfIn PDF document text
    • https://nopogevoxipati.weebly.com/uploads/1/3/1/4/131410158/wabezelil.pdfIn PDF document text
    • http://natorg.fun/how_to_set_armitron_pro_sport_watch_wr_165_ft9s8k1.pdfIn PDF document text
    • https://zotizoju.weebly.com/uploads/1/3/5/3/135349435/3410744.pdfIn PDF document text
    • https://verijijul.weebly.com/uploads/1/3/4/8/134861220/755244.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/e97e27d5-9078-458a-9b80-621574109fe7/97332730840.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6b3c879-038c-4a96-a642-c190202ee1c0/fadaguxelal.pdfIn PDF document text
    • http://kofadoz.rf.gd/mejur.pdfIn PDF document text
    • http://zesexabipezu.epizy.com/nezum.pdfIn PDF document text
    • http://wasuwenakab.epizy.com/stop_kiss_monologue.pdfIn PDF document text
    • http://dutowefi.epizy.com/adobe_premiere_elements_price_uk.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_off0001d1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D1AC 5356 bytes
SHA-256: 5e62390163a446e2ee32dfe3fee8f1727ba446bbfc3db7aa996e28fdf53295ed
font_01_sfnt_off0001e3ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E3EA 11340 bytes
SHA-256: d83f781e6d647474adf74feb160a38dbf501c8f8f2a41250ce026a905c2a2a29

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