Malicious PDF — malware analysis report

Static analysis result for SHA-256 3be7ba1bb75c150c…

MALICIOUS

PDF

78.3 KB Created: 2021-03-01 10:05:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cbdc58616059d5b4a04dc25a1740160c SHA-1: 4410200400ff4857bfb80e6f30c33524b05eafcc SHA-256: 3be7ba1bb75c150c622d43260e31366f8508e21d72f927ee44b60649ba38678b
126 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm hosted on disposable domains, with one external URI pointing to a suspicious URL. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and external links suggest an attempt to redirect users to malicious content, possibly exploiting PDF vulnerabilities or social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://mezovuduw.ru/award?keyword=2018+toyota+camry+xle+safety+features PDF link annotation
    • http://com-connexion.xyz/excel_enable_spell_check_on_protected_sheetotwlo.pdfIn PDF document text
    • https://gilurumujeluzem.weebly.com/uploads/1/3/1/8/131857598/8552130.pdfIn PDF document text
    • https://cdn.sqhk.co/neseleko/geE0Shf/cute_drawing_ideas_for_him.pdfIn PDF document text
    • http://creamwalls.online/5099476225pzqzg.pdfIn PDF document text
    • https://galixasuja.weebly.com/uploads/1/3/4/5/134518214/sonumi.pdfIn PDF document text
    • http://imm-shoes2.club/how_long_was_the_great_depression_in_americaa3x52.pdfIn PDF document text
    • http://fukerijinexin.mygamesonline.org/3343321132.pdfIn PDF document text
    • https://sutesesa.weebly.com/uploads/1/3/4/8/134871168/xitepazaxopedezox.pdfIn PDF document text
    • http://kudukudimox.sportsontheweb.net/disneyland_paris_resort_map.pdfIn PDF document text
    • https://cdn.sqhk.co/pajijolabalu/iamJNhB/square_enix_software_token_serial_number.pdfIn PDF document text
    • https://sazejibapox.weebly.com/uploads/1/3/4/8/134863873/kenirovoxafarumus.pdfIn PDF document text
    • https://vafabifagid.weebly.com/uploads/1/3/4/5/134583570/3761902.pdfIn PDF document text
    • https://cdn.sqhk.co/woleparos/gjib0hb/90107849831.pdfIn PDF document text
    • https://cdn.sqhk.co/muxuzoxipopa/chcgjjh/wifanuladejimulasavam.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/paxevug.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/29192741087.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/babybjorn_bouncer_balance_soft_vs_bliss.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/calendar_week_2018_template.pdfIn PDF document text
    • http://pudedenos.epizy.com/minccino_evolve_forms.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC01 5624 bytes
SHA-256: fa394ce8472ef4a01640727aee8f9377976f81d7ad6c051c36c22136d396060a
font_01_sfnt_off0000ff19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF19 10280 bytes
SHA-256: c04058dee2cca108fa9b115bb6b76cec2a548be227d151e9b416bbc8e2550341
font_02_sfnt_off00012244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12244 2212 bytes
SHA-256: a99082a3efacc90c8b99d2131f29bd8f8e724f9a4b76981074b90a7909f883eb

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