Malicious PDF — malware analysis report

Static analysis result for SHA-256 322899f7477872d1…

MALICIOUS

PDF

82.3 KB Created: 2021-04-08 01:13:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 611b3ab1d24c539b5373d3e465619e6f SHA-1: 1bd1359cf86dab45c070d89792891725511c76b3 SHA-256: 322899f7477872d144d212fda28472de795c64a591b569fb0db6125d230e9c46
96 Risk Score

Malware Insights

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

The file is a PDF document that contains embedded URLs, one of which is prominently featured in the document's metadata and body text, suggesting a phishing or social engineering attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the presence of multiple suspicious URLs and the document's deceptive content point towards an attack pattern involving luring users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ponafet.ru/123?utm_term=user+persona+interview+questions+and+answers
    • http://verifybadgehelp.com/92181317613uwnfo.pdf
    • http://businessmentality.com/school_yearbook_templates_free94m7z.pdf
    • https://ponebivilu.weebly.com/uploads/1/3/4/5/134505494/fesetarepokomil_keditavusikos_foxif.pdf
    • http://sfhgfje5df.xyz/perisno_custom_troopsxxzdv.pdf
    • http://songkfrk.site/42981136324l3m5c.pdf
    • https://zukevijidogokil.weebly.com/uploads/1/3/0/7/130738647/6199134.pdf
    • http://1xbet-regi.site/660363751149yknm.pdf
    • http://drilltech.info/gexegufomolurajufipoxoyi50f.pdf
    • https://cdn.sqhk.co/pedajobu/1gdDajf/zejigivofuven.pdf
    • http://umkatrade.ru/runes_of_magic_druid_guidee74mn.pdf
    • https://cdn.sqhk.co/bevoroxur/vhgQBij/70064796191.pdf
    • http://itrom.fun/take_five_sheet_musicvu606.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/57e4f560-29c9-4882-bed6-cb63b48a679f/dedukojozi.pdf
    • https://uploads.strikinglycdn.com/files/40c38df5-aa64-4216-b0e5-e94a5a68abaf/karcher_pressure_washer_engine_oil.pdf
    • https://uploads.strikinglycdn.com/files/b4c7704f-0239-48eb-91e3-cfbff28e8ef4/john_deere_garden_tractor_replacement_seat.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106e6.bin
7757f9c305f6724fa5f9be621739309c99d3109221a7de09661d077ac67aa20b
pdf-font-stream PDF embedded font (sfnt) at offset 0x106E6 5192 bytes
font_01_sfnt_off000118b3.bin
7773ba4f7f5fdaea6398c4536e8636aed3423991199c0cd6b910d8121e7b9c64
pdf-font-stream PDF embedded font (sfnt) at offset 0x118B3 10660 bytes