Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0cc2e7ba3c1d2dc…

MALICIOUS

PDF

73.4 KB Created: 2021-02-27 01:14:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c1a8533c471a06759a9f707b9746b89c SHA-1: f29ef698a43ca04c5d8c577f2f666e48aed8173a SHA-256: b0cc2e7ba3c1d2dcf7b6216420f171cc22bcd52e7c0049dc0688c915f71d8ab4
216 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://jumiwimov.ru/wix?keyword=livecareer+resume+builder+cost PDF link annotation
    • https://cdn.sqhk.co/susojareb/jgNjcji/22278538716.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/iddSNig/servers_for_mcpe_1._16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469831/normal_60158ea4665c6.pdfIn PDF document text
    • https://cdn.sqhk.co/votijavos/xibiDjh/tinukiwog.pdfIn PDF document text
    • https://fafotarume.weebly.com/uploads/1/3/1/0/131069904/xijoxuxadekuligosege.pdfIn PDF document text
    • http://stavki.link/xifanamupopl4yk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489722/normal_6023a10d9841f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450516/normal_5fe93f3b09b7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455185/normal_60143cb51117b.pdfIn PDF document text
    • https://cdn.sqhk.co/sovanoniwuva/fgdtha3/pathogenic_bacteria_contamination.pdfIn PDF document text
    • https://fasexunatosupa.weebly.com/uploads/1/3/1/6/131606354/wiwamej_lujemoni.pdfIn PDF document text
    • http://wotidoteked.mywebcommunity.org/gibusafiw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485714/normal_602b9138e193e.pdfIn PDF document text
    • https://nirotagikul.weebly.com/uploads/1/3/5/9/135992947/difagudekibe.pdfIn PDF document text
    • https://cdn.sqhk.co/vukupamita/lldiaii/nuluwewativavetonelunol.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e3ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE3AB 5224 bytes
SHA-256: 2875be90fb97e11ddae038a1c738a0daf63746f392bf661cdd456c450672a399
font_01_sfnt_off0000f55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF55D 10412 bytes
SHA-256: f563aaeaef8f8f652bd0bd7e6ec41accbc7dc7b39fd93490db95b5c8c19751b2