Malicious PDF — malware analysis report

Static analysis result for SHA-256 faea7a2287a49f17…

MALICIOUS

PDF

79.2 KB Created: 2021-03-29 21:17:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ae120ec40157742fb3b2d31a7dd77db2 SHA-1: 72b3f7237bcfae37062bf745b4c094625661c5c2 SHA-256: faea7a2287a49f17348db5e029b79c90400d1f21323aeee06f3167067a56254a
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 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://maypoin.ru/123?utm_term=biographical+data+form+template PDF link annotation
    • http://lazirawolewok.getenjoyment.net/how_to_open_motorola_talkabout_250.pdfIn PDF document text
    • http://xelibirujegid.mywebcommunity.org/91704135936.pdfIn PDF document text
    • http://filemarker.store/5_clues_1_word_answers_level_306xjsut.pdfIn PDF document text
    • http://vizexibidoxi.getenjoyment.net/kugopozalarevelif.pdfIn PDF document text
    • http://summer-italy.fun/anderson_paak_come_downncgak.pdfIn PDF document text
    • https://cdn.sqhk.co/duxadikoti/idjcjMr/27310119283.pdfIn PDF document text
    • https://cdn.sqhk.co/libobivole/khdsehh/tetepoxotumozotidalajiv.pdfIn PDF document text
    • https://cdn.sqhk.co/pogadidotilu/6jhamKU/lujibojuli.pdfIn PDF document text
    • http://sifimomikev.sportsontheweb.net/vupewitojijawofogisufol.pdfIn PDF document text
    • https://cdn.sqhk.co/jomububorava/jhigeW7/36409288433.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/tugumeb/castillos_del_loira_mapa.pdfIn PDF document text
    • https://s3.amazonaws.com/mukut/monster_hunter_world_weapon_guide_insect_glaive.pdfIn PDF document text
    • https://s3.amazonaws.com/ropidadegaxut/writing_task_1_map_answer.pdfIn PDF document text
    • http://vobozezojip.onlinewebshop.net/35106349637.pdfIn PDF document text
    • https://d38713d8-f9e0-49bf-8e72-3f46774ce551.filesusr.com/ugd/b3faf5_345ef2d0d68f4ee2980aad6570723f33.pdf?index=trueIn PDF document text
    • http://sukokovevaz.atwebpages.com/xatamelijevazibapopuj.pdfIn PDF document text
    • https://dfabac9c-3a78-4d86-b112-ccf1750024e9.filesusr.com/ugd/b46e2f_52e952ae4f9b40338e03f9c4cb1033b3.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8D9 5440 bytes
SHA-256: 68bce0920f70105c147a336259d6d1bdf7619185e22c90419be6922287613736
font_01_sfnt_off00010b3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B3A 10732 bytes
SHA-256: bfdd5bc552574c6eccb29413923b7fb5a45b3a88d4fa14416f8fcbffad1c8991

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