Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7db878291fb361…

MALICIOUS

PDF

79.7 KB Created: 2021-03-24 22:10:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 42225ec1301d737445ca1af18574d4b3 SHA-1: bd35fe6523c4bdb944fe299991ed125fd69550f8 SHA-256: cc7db878291fb36123eb44c05cff3e65b3f8e4f02b6d21e6abc7b44f234adb95
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable or suspicious domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body's reference to 'Google drive email pdf' suggests a lure to trick users into visiting these external sites, likely to harvest credentials or deliver further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xajibur.ru/award?keyword=google+drive+email+pdf PDF link annotation
    • https://deminoki.weebly.com/uploads/1/3/5/3/135310913/afb85.pdfIn PDF document text
    • https://xonokuraku.weebly.com/uploads/1/3/3/9/133988937/068b70.pdfIn PDF document text
    • http://autobaff.xyz/40590477133qffkx.pdfIn PDF document text
    • http://toworugesolur.getenjoyment.net/80875358732.pdfIn PDF document text
    • http://5euro.info/countable_and_uncountable_nouns_worksheetsj0i0c.pdfIn PDF document text
    • http://roflan.site/the_twilight_saga_breaking_dawn_part_2_torrentjemws.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/yhdohbU/dajaduwatu.pdfIn PDF document text
    • https://katozela.weebly.com/uploads/1/3/0/8/130874493/gilibidefukujego.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/ghExAii/ice_cream_rollery_black_owned.pdfIn PDF document text
    • http://lenuvivureropi.scienceontheweb.net/mamekuzuxe.pdfIn PDF document text
    • http://latitekiwa.scienceontheweb.net/sibafuwejuxu.pdfIn PDF document text
    • http://samyog.ru/harvard_referencing_guideic453.pdfIn PDF document text
    • http://lajodibibodi.getenjoyment.net/lagipek.pdfIn PDF document text
    • https://cdn.sqhk.co/fumamimed/gceoic6/latigo_romano_de_tres_puntas.pdfIn PDF document text
    • https://bivejeweki.weebly.com/uploads/1/3/4/3/134322338/9831737.pdfIn PDF document text
    • https://legawugo.weebly.com/uploads/1/3/4/5/134509979/23c606604.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jisunopesaluzi.atwebpages.com/25418669123.pdfIn PDF document text
    • http://wipadafefuxasi.onlinewebshop.net/44972245938.pdfIn PDF document text
    • http://dotenax.rf.gd/91742887355.pdfIn PDF document text
    • http://rupesujutiwu.myartsonline.com/slouching_towards_bethlehem_quotes.pdfIn PDF document text
    • http://jemudizibumak.epizy.com/cmfas_m3.pdfIn PDF document text
    • http://xubumanazi.rf.gd/high_school_physics_textbook_free_download.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_off0000f8ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8AB 5272 bytes
SHA-256: 3c8fcdecf53ba0d1fa81472732b1570697ae4d678954335c3a2eb16939351d4f
font_01_sfnt_off00010a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A90 10864 bytes
SHA-256: 3bac4282a26762e3bc71acee25ba9abb82ee0d071740160fcc70b24f846d3c56

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