Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0c2f5e1dd1ded3…

MALICIOUS

PDF

73.0 KB Created: 2021-03-06 16:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: ca19f83d60f00202a4e186d9913468d2 SHA-1: 884f88271c25794c434a7c9a46ddc53b57f0245c SHA-256: fd0c2f5e1dd1ded32e857347e43bdbdbe3e28929524206d3b72584bee09b75ea
126 Risk Score

Malware Insights

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

The PDF contains numerous links to external domains, including one that is explicitly flagged as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URI points to a URL that appears to be part of a campaign, and the document body, though heavily obfuscated, contains text related to 'distance displacement' which is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://kuzutuzo.ru/strik?utm_term=what+is+distance+displacement PDF link annotation
    • http://gadatoreneperil.mygamesonline.org/59541615564.pdfIn PDF document text
    • http://mikrotikwizard.com/xelumusegexasulinugafz1vhh.pdfIn PDF document text
    • http://llloooodddd.space/pop_art_architecturexg2z6.pdfIn PDF document text
    • http://venolilixe.mygamesonline.org/does_the_arc_trainer_help_lose_weight.pdfIn PDF document text
    • http://sadogiropi.mypressonline.com/valence_electrons_practice_worksheet_answer_key.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_60240f4ae0fce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_600fc55a1e898.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384468/normal_5fd94bf5f024f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454803/normal_5fc9cc171c79e.pdfIn PDF document text
    • http://santecmb-sarl.com/hp_deskjet_f4280_all-in-one_printer_pricepf5m7.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/99893569875i73qa.pdfIn PDF document text
    • http://rosutob.getenjoyment.net/ac_joint_dislocation_exercises.pdfIn PDF document text
    • http://amst-watch-v1.club/bodovelusejosowutuko8uq0.pdfIn PDF document text
    • http://warowusavi.mywebcommunity.org/jogudebimekuguzupivilud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377925/normal_601a4d8f0619e.pdfIn PDF document text
    • http://tryraisins.club/53253513680vz87a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454556/normal_60365aff20bec.pdfIn PDF document text
    • http://gebevojika.mygamesonline.org/85267013369.pdfIn PDF document text
    • http://upsbox.ru/65890874983yrtxe.pdfIn PDF document text
    • http://gixipures.sportsontheweb.net/lodafajewapubenigud.pdfIn PDF document text
    • http://espaceclient-cmb.com/the_columbian_exchange_worksheet_answer_keyniyqa.pdfIn PDF document text
    • http://fastpeysistem.online/california_reading_fluency_standardsn0olo.pdfIn PDF document text
    • http://ibkreactiva2020.com/68224632339en7uj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B0 5232 bytes
SHA-256: aa0872f5e2641116325adaca3356ecd9d4b4253a851d66290fe0e14e9a108545
font_01_sfnt_off0000f362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF362 10320 bytes
SHA-256: e47ab18ae2189cd285c7c9dc9edbf88ba8e7befcbd8cea9ee234bb35302a4b65

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