Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0f2be305113745…

MALICIOUS

PDF

75.5 KB Created: 2021-03-27 13:52:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-28
MD5: fd8233b10790e42f87308f9ffacdbb72 SHA-1: 98c95c12fc2bea7793ef81208644707f87377624 SHA-256: 6f0f2be305113745131addf0c4a721ea8bdd5c54b4c4d356612df31c71be8859
126 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to disposable hosting or link farms, indicating a phishing or malicious content distribution scheme. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a lure to a malicious website.

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://mezovuduw.ru/wix?keyword=kindle+paperwhite+3+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4372735/normal_603e7d186652f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404502/normal_6056b54cb775a.pdfIn PDF document text
    • http://tukebifivimix.iblogger.org/xogak.pdfIn PDF document text
    • http://muxevaxudinibo.iblogger.org/anodic_coating_defects_their_causes_and_cure.pdfIn PDF document text
    • https://cdn.sqhk.co/lasanamemego/jirgTT6/derwent_inktense_colored_pencil_sets.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449775/normal_6002a90c9bc9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455377/normal_6011d2cd7b275.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376380/normal_5ff252c9d179f.pdfIn PDF document text
    • https://cdn.sqhk.co/guzamuvi/7ijQqcE/javapikazeso.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458614/normal_5fee810dafd50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460944/normal_6018b17bb9943.pdfIn PDF document text
    • https://cdn.sqhk.co/fafujedajir/ojaBM1h/88008279276.pdfIn PDF document text
    • http://xejevojesinil.22web.org/tefenegurixulukulin.pdfIn PDF document text
    • http://dejenenipanoz.22web.org/coronary_artery_disease_indonesia.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://8d2868a3-57b7-484c-81f6-493c1c4f5daa.filesusr.com/ugd/a8ca0f_2eeeff00f6fa470db0af71600604d5ed.pdf?index=trueIn PDF document text
    • http://wuxirakagatijir.epizy.com/lunitobeve.pdfIn PDF document text
    • https://31f314b5-0768-4c24-bd49-4596ea953b46.filesusr.com/ugd/85a4b1_ead4a0ed201d473ab788b1aba3c22140.pdf?index=trueIn PDF document text
    • https://12dd324c-696b-4d67-8c19-991f3eacec2c.filesusr.com/ugd/eeb7bd_45325756df9049ed838ef7da0c611f77.pdf?index=trueIn PDF document text
    • http://velevemi.epizy.com/b._ed_mathematics_books.pdfIn PDF document text
    • https://59b7e61f-9850-45ee-add2-e9646db267e4.filesusr.com/ugd/5b9365_1087c807ecb34225af49b8b53d08507a.pdf?index=trueIn PDF document text
    • http://jawolaguf.rf.gd/avery_shipping_labels_template_5126.pdfIn PDF document text
    • http://derizarage.epizy.com/course_outline_template.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_off0000e671.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE671 5328 bytes
SHA-256: d964e2a2342696c9c2c6afc125ab894c242cf45e8a8d369048df07384eb32279
font_01_sfnt_off0000f883.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF883 11472 bytes
SHA-256: 6786802430f0c2a848219a6e33cc9862601c808c0a8e3cf27ebb6eb057e0e4f7

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