Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd516a6fe0d1281…

MALICIOUS

PDF

70.7 KB Created: 2021-02-27 14:02:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: b2cdbf73e7fee81c3ba25f7e74c21a64 SHA-1: d6b190f09cfaa4253f77f7fb0973edb3bd742b68 SHA-256: 0bd516a6fe0d128168f70f3fe18305f5c1cc2fc8d12d1a137c62056b946ef912
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://fokemale.ru/wix?keyword=causes+of+the+civil+war+webquest+worksheet+answers PDF link annotation
    • http://raxejudesezix.scienceontheweb.net/52126744684.pdfIn PDF document text
    • https://cdn.sqhk.co/pimidima/VdiijgU/morulevomoxoxezijapude.pdfIn PDF document text
    • https://cdn.sqhk.co/webuzifinuno/8xid9Us/41806256967.pdfIn PDF document text
    • https://bipuwuvi.weebly.com/uploads/1/3/0/7/130776795/3604353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418981/normal_5fe12718e196d.pdfIn PDF document text
    • http://siwupojotuj.getenjoyment.net/57985916940.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407102/normal_5fccdcea4f27b.pdfIn PDF document text
    • https://cdn.sqhk.co/fenajobuwer/jhzhjcM/recargar_telcel_con_tarjeta_de_debito_por_internet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467571/normal_6018e080e606d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459628/normal_6027b180a5567.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://juludiripo.myartsonline.com/how_to_save_your_marriage_before_meeting_your_spouse.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/dupesedanufivomirab.pdfIn PDF document text
    • http://zudupaxub.myartsonline.com/litezoxejelimu.pdfIn PDF document text
    • https://s3.amazonaws.com/fikuvine/enlighted_energy_manager_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/myanmar_proverbs_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/pcrf_full_form_in_telecom.pdfIn PDF document text
    • https://s3.amazonaws.com/fejakixoweka/nasonusulal.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/dobexetedugawisuwa.pdfIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/26780355070.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_off0000d7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E4 5356 bytes
SHA-256: 3db51a05e2ca65c6ae18225fe6e2763d53c209415b43bf5ab18f1e87e38553e4
font_01_sfnt_off0000ea2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA2C 10136 bytes
SHA-256: 1567673285036f64bd2c551ed633ef1a1c9dc8086dae1121b5327839e2ec67bc

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