Malicious PDF — malware analysis report

Static analysis result for SHA-256 b02ed89663e43395…

MALICIOUS

PDF

77.3 KB Created: 2021-02-21 20:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 75b24a34502486ec7641deee1db91f0f SHA-1: 5817e27e14ea64881d219f22a139fd043de7b03c SHA-256: b02ed89663e43395666ba3ce8e487cdc76aa7796f1ed5a0b6c3014ca9a641a45
254 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
  • 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 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.
  • 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/aws?utm_term=hp+designjet+5000+printer+series In PDF document text
    • https://static.s123-cdn-static.com/uploads/4376600/normal_6000f76fb3b54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447098/normal_601de56a34f77.pdfIn PDF document text
    • https://mefusinumobidal.weebly.com/uploads/1/3/4/6/134679396/rilavufegafak.pdfIn PDF document text
    • https://kigolakelo.weebly.com/uploads/1/3/1/3/131380934/4546759.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384295/normal_60011f6dd24d2.pdfIn PDF document text
    • https://javexediwoxi.weebly.com/uploads/1/3/4/5/134584379/4a75260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368976/normal_600d7faba32d6.pdfIn PDF document text
    • https://xoxekoxezugox.weebly.com/uploads/1/3/0/7/130738790/vebiruzazukedesoti.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374838/normal_6006cd58c73e9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuxefofoxomar.epizy.com/year_end_bonus_and_cash_gift_guidelines.pdfIn PDF document text
    • http://jufakoxageponuz.rf.gd/centrelink_form_mod_pc_private_company.pdfIn PDF document text
    • https://s3.amazonaws.com/kotodur/48768143566.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/night_owl_optics_explorer_pro_5x_night_vision_binocular_nob5x.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/66657063928.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/50663388763.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_off0000f338.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF338 5188 bytes
SHA-256: 04fc281a55cc91c634d1057197e9652ba27c90dbde6bd52e42fe926754991487
font_01_sfnt_off000104fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104FC 10460 bytes
SHA-256: e0ed151ef433760abd4fcc81440da944ffeca04e6e29a000d9b0d49d808aebba

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