Malicious PDF — malware analysis report

Static analysis result for SHA-256 70ee972461042a22…

MALICIOUS

PDF

74.3 KB Created: 2020-11-12 12:54:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8575914914810dcd40c02b332b9f9184 SHA-1: dd5c28c47b721ec5cc0edb7b300da8c7e0eba0bd SHA-256: 70ee972461042a224bde3f5945cc1b695ade84de62af2997dd35707495d88a6d
156 Risk Score

Malware Insights

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

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 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.
  • 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://traffine.ru/123?utm_term=eid+date+2014+maharashtra PDF link annotation
    • https://wizenavadabavor.weebly.com/uploads/1/3/4/5/134518239/tenuvolipuranu_wojepebudi.pdfIn PDF document text
    • https://rusokupos.weebly.com/uploads/1/3/4/4/134468665/7944553.pdfIn PDF document text
    • https://vixeroniwemeful.weebly.com/uploads/1/3/0/7/130740086/jarekinaku-puzavekawav-tezodabigo.pdfIn PDF document text
    • https://sebijulevezokoj.weebly.com/uploads/1/3/4/5/134512917/7766870.pdfIn PDF document text
    • https://sixexarujizevav.weebly.com/uploads/1/3/4/5/134584368/a7c7584.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383681/normal_5fa45b281dd58.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/guilds_of_ravnica_early_pick_order.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/equilibrio_acido_base_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/massachusetts_colony_religion_facts.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/dibuzagexuburupobofamom.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/fetch_rewards_apk_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/gepakijezo.pdfIn PDF document text
    • https://s3.amazonaws.com/muvemasoxaji/58302186796.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_off0000e72a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE72A 5404 bytes
SHA-256: 430676bf36b13597867a9a2c08e1deb687d46f742bf5b9ddc305348fc414bb8d
font_01_sfnt_off0000f96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96C 10360 bytes
SHA-256: fc12f6892148837bba7e33f37caf1d1b975b78d1fcf64b4db35c380d69951654