Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b30e01a04ef0f4b…

MALICIOUS

PDF

71.1 KB Created: 2021-03-02 10:40:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ab47bb94262dccdace52699fd186f403 SHA-1: e17777120554460155e372966fc7d21307ea8c12 SHA-256: 8b30e01a04ef0f4bdd91cbd221418e8753838dba6ad1d237a68da462df70cda8
184 Risk Score

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=neil+degrasse+tyson+astrophysics+in+a+hurry+free+pdf In PDF document text
    • http://websporizle3.com/brain_teaser_worksheetmgnd9.pdfIn PDF document text
    • http://polobasopika.mywebcommunity.org/calendar_girl_audrey_carlan_series.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415055/normal_5fdac22617553.pdfIn PDF document text
    • http://opt05.ru/42687418041ligos.pdfIn PDF document text
    • http://specialsale.info/bivepuvalafamonamebajome46fil.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/98291667711.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404520/normal_602e0d2cbe6c6.pdfIn PDF document text
    • http://intekzafast.online/wilivifiliganemigodvs1he.pdfIn PDF document text
    • http://jadebey-x.com/calorimetria_livroshbp7z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481272/normal_6017791a530d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419236/normal_6012974871834.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370080/normal_600279dccbaae.pdfIn PDF document text
    • http://santand-es.com/dolegubv4o29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417997/normal_601ecee81254f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453142/normal_603bc833eaec0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481168/normal_5fe3e629242e2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kivozusemu.atwebpages.com/57108035919.pdfIn PDF document text
    • http://kipejefanowisu.atwebpages.com/dejonugek.pdfIn PDF document text
    • http://velewetuwo.rf.gd/satudadorezedapigenap.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_off0000d6da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DA 5488 bytes
SHA-256: 473975f4fcbd61837955e2b75f35104dcbaaf7114d64e111267c7ed780401b8a
font_01_sfnt_off0000e993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE993 10272 bytes
SHA-256: 25e2313e03b6710118eed23a966e4ba88cf503730567a99d128f69a0691d1830

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