Malicious PDF — malware analysis report

Static analysis result for SHA-256 eedc882a2078ae4e…

MALICIOUS

PDF

77.5 KB Created: 2021-02-16 03:41:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 404c0424744f09602cb1c4ce12e282b1 SHA-1: f8714a0325a8c17c40547a8269ad603d3887550d SHA-256: eedc882a2078ae4e784a7a5b5bd0805e10237c27492688aec112a451709f38e5
266 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://wimegipovuxu.weebly.com/uploads/1/3/4/3/134373819/kavukutoso-kuwanevopibu-radasonimisug.pdf.
  • 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.
  • 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://bologen.ru/wix?keyword=ncwc+inc+auto+warranty PDF link annotation
    • https://cdn.sqhk.co/woleparos/hifBAhi/21543856118.pdfIn PDF document text
    • https://wimegipovuxu.weebly.com/uploads/1/3/4/3/134373819/kavukutoso-kuwanevopibu-radasonimisug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456687/normal_5fd893e05861e.pdfIn PDF document text
    • https://wotujajatedigi.weebly.com/uploads/1/3/5/2/135295120/zagok.pdfIn PDF document text
    • https://cdn.sqhk.co/buruvalufe/gjc7nhg/airbnb_coupon_first_time.pdfIn PDF document text
    • https://cdn.sqhk.co/rijunawep/gfpricZ/age_of_empires_2_gold_edition_cheats_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/mgdhfjg/lucky_block_for_mcpe_1._16.pdfIn PDF document text
    • https://pijefezumiw.weebly.com/uploads/1/3/1/3/131379255/52e784050d1.pdfIn PDF document text
    • https://tezifotunojoke.weebly.com/uploads/1/3/0/7/130776805/zuweveribasofew_jaxitexinawufi_jugovedazena.pdfIn PDF document text
    • https://foderojev.weebly.com/uploads/1/3/4/0/134041652/3c155e0e.pdfIn PDF document text
    • https://pajenugemin.weebly.com/uploads/1/3/4/6/134677616/porujos.pdfIn PDF document text
    • https://cdn.sqhk.co/molavagew/bc472YV/dipipawunijabasexotipijo.pdfIn PDF document text
    • https://cdn.sqhk.co/pujazojiwixi/gjjiidD/55607813966.pdfIn PDF document text
    • https://xutonipojoneri.weebly.com/uploads/1/3/4/6/134667901/rutaziriwujeti-fovalixepedad.pdfIn PDF document text
    • https://rumitubo.weebly.com/uploads/1/3/4/5/134525427/362d3239.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_off0000f4ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4EF 4744 bytes
SHA-256: 3212a5afc66efd1886adbb3c3b4e07bb17d77ad8f9da93efe784a7cdddc50c71
font_01_sfnt_off00010540.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10540 10488 bytes
SHA-256: 255e6c7764f28cd90ffdf7c97ec68239e8633c92693ffffddb7e9876c5736817

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