Malicious PDF — malware analysis report

Static analysis result for SHA-256 93ee544c81f7d278…

MALICIOUS

PDF

62.7 KB Created: 2021-02-18 04:07:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f40bd6e9efcdf76f50fed819ff6beb31 SHA-1: 05daec6b8aea1ad1e9b36744af3aeb6e0bf00c6e SHA-256: 93ee544c81f7d2786bace464bfaab91fa0b6d0ab127f32efd390bf5487581852
126 Risk Score

Malware Insights

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

The file is a PDF containing numerous embedded URLs, many of which point to suspicious or unknown domains. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of hosting multiple links on disposable domains, a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or serving a secondary payload.

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/aws?utm_term=the+ecology+of+plants+second+edition+ebook PDF link annotation
    • http://ig-verifiedsbadge.com/wudukujojerzw.pdfIn PDF document text
    • http://dehydratedoriginalgoodness.com/south_park_capitulos_latino2ff8k.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412573/normal_602da1916075f.pdfIn PDF document text
    • http://enots.space/sazugeminepafixelowotasef86a0.pdfIn PDF document text
    • https://tuxipowu.weebly.com/uploads/1/3/4/6/134699968/kiburezododu_mifur_mozilidop_mozejemi.pdfIn PDF document text
    • http://vnatural.space/1919626723476uyf.pdfIn PDF document text
    • http://hookup681.site/smart_dealership_near_meevwbt.pdfIn PDF document text
    • http://0fruits.space/challenge_full_hd_movie_bhojpuri3enkl.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4530868/normal_5fff0ebba1a81.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/giwirezezutovum-kavewo-wufolakag.pdfIn PDF document text
    • http://clubstore.pro/envelope_address_format_in_wordb5i04.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/wupiwupiwot/popujexazinaji.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_off0000b738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB738 5576 bytes
SHA-256: 13f773909c2ab90012377e35e2009e6ca4b339890698c19613aa5c35cac43798
font_01_sfnt_off0000ca39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA39 10448 bytes
SHA-256: 744ece2833f9d9470183294b1eb6cbed93045b38d7fd43e1aa9a276ba5f08949

Open this report in the interactive analyzer, or submit your own file for analysis.