Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6315fce4cac8508…

MALICIOUS

PDF

66.3 KB Created: 2021-02-15 01:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dbfd1831628c744f71fd7d794d4d0d82 SHA-1: ed78720978f1832f73f3287215ec3ff97574e8de SHA-256: b6315fce4cac850809641f8a30c97bc4a6ea23d53a0d639ffa69384b1dd707f9
166 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
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://baarspo.ru/wix?keyword=the+wife+of+bath%2527s+tale+questions+and+answers+pdf PDF link annotation
    • https://cdn.sqhk.co/birenejar/hdkcWmK/50_inch_smart_tv_120hz.pdfIn PDF document text
    • http://front-glass.website/mechanical_heart_valve_anticoagulation_guidelines_australiary2ig.pdfIn PDF document text
    • http://tiktokhd.design/bosatenaluzosixa56lqo.pdfIn PDF document text
    • https://lipemegovaw.weebly.com/uploads/1/3/4/7/134766771/zomasakavuzoropax.pdfIn PDF document text
    • https://kudoxere.weebly.com/uploads/1/3/4/5/134591480/zekijera.pdfIn PDF document text
    • https://cdn.sqhk.co/dixufeja/MVjjjhx/steamboat_springs_airport_hdn.pdfIn PDF document text
    • http://6gusevshop.website/xudapota4b4ky.pdfIn PDF document text
    • http://ruxuruweluwi.iblogger.org/promissory_note_form.pdfIn PDF document text
    • https://vezutokabev.weebly.com/uploads/1/3/4/7/134758566/nimitukubikota.pdfIn PDF document text
    • https://texexavif.weebly.com/uploads/1/3/1/4/131454683/potaxeguraviwazib.pdfIn PDF document text
    • http://managerprogram.live/98006540293fmmjc.pdfIn PDF document text
    • http://reassurez-moi-fr.info/27887255445t1soa.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwefuxab/gdibHib/overcoming_obstacles_inspirational_quotes.pdfIn PDF document text
    • https://cdn.sqhk.co/gidetixi/0gh5jh1/90927003614.pdfIn PDF document text
    • http://podarokinsta24.online/keterozixometokagumoge9fnpp.pdfIn PDF document text
    • https://zupalopozaguri.weebly.com/uploads/1/3/2/3/132302876/ruserewarez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gedonisezif.epizy.com/saxupufuvesejak.pdfIn PDF document text
    • http://mumazidujinodu.epizy.com/lugew.pdfIn PDF document text
    • http://furofazitogo.epizy.com/kim_kardashian_hollywood_pet_guide.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_off0000c683.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC683 5472 bytes
SHA-256: 37f9fbe5426d90add8d975b1b7bd6d1666f11bebf38b27a25d434739ad23c2e8
font_01_sfnt_off0000d926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD926 10188 bytes
SHA-256: 8021f228edb50866e89f096e318e123e429e3129022498fd8da37829472611d2

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