Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e45847efcab17f1…

MALICIOUS

PDF

67.7 KB Created: 2021-02-13 03:56:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f6c4377a29c7dbec64ac7163a10a6ef9 SHA-1: 33a13ebde866db998e441387a634275b6617ab90 SHA-256: 0e45847efcab17f1348e0fb509f9fe186445e04caa329d6e14e5ab662d750a15
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://bologen.ru/123?utm_term=qubit+kit+br PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4497353/normal_602638511d2bc.pdfIn PDF document text
    • http://construt.site/easyanticheat__x86._dll_fortnite4wemv.pdfIn PDF document text
    • http://voicebftyi.com/80110580433rpktv.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/agbami_scholarship_past_questions_and_answerskzcax.pdfIn PDF document text
    • https://depatimuxuzox.weebly.com/uploads/1/3/4/4/134404048/latelojir-vokotox.pdfIn PDF document text
    • http://perevod24-card2card.site/danake3ioc0.pdfIn PDF document text
    • http://noverst.xyz/outdoor_ant_killer_home_depotkrn1t.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/pevuwarobuvowa/xafexaganululanov.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/pepidunenajatodezeborer.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/fusigavetubi.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/fikere.pdfIn PDF document text
    • http://jegepifewomu.epizy.com/gukeni.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/xisuzokixena.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/3335363308.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/duchess_of_malfi_movie.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_off0000cd9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9B 4524 bytes
SHA-256: 15565ae35b1cd16b261050788218b6ff476cf41379491d61fec147e76eb26764
font_01_sfnt_off0000dd10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD10 11088 bytes
SHA-256: a2c36bada74fbd054e644e3f5475bb615108f64fefabd9a33bfa97e7b3ecfa64