Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8de008facb670fe…

MALICIOUS

PDF

69.1 KB Created: 2021-01-27 16:40:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3a777ea04044efad7bb057a54369f19b SHA-1: 09e67d19af2aa2ba42bb38749a4294e999eae878 SHA-256: c8de008facb670fe7d78ebd9c47e19625646780daa4eceaf94c8de9e5352721b
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://litufefanim.weebly.com/uploads/1/3/4/9/134901191/206687.pdf.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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://seumenha.ru/aws?utm_term=blackberry+id+username+format PDF link annotation
    • http://confirmyourverifiedbadge.com/lamixaxixadildlm9e.pdfIn PDF document text
    • http://manybigs.space/41260972311wavmz.pdfIn PDF document text
    • https://litufefanim.weebly.com/uploads/1/3/4/9/134901191/206687.pdfIn PDF document text
    • https://sepetumeba.weebly.com/uploads/1/3/4/6/134601334/2827448.pdfIn PDF document text
    • https://demijogukif.weebly.com/uploads/1/3/1/3/131382539/1f633b.pdfIn PDF document text
    • https://jujoxiro.weebly.com/uploads/1/3/4/8/134875196/didawofufaxasa_zavip.pdfIn PDF document text
    • https://cdn.sqhk.co/diwiporeb/JUNhegf/spider_bites_treatment_for_babies.pdfIn PDF document text
    • https://cdn.sqhk.co/dufelogaruf/fhjYgh9/keperulupa.pdfIn PDF document text
    • https://tureduritisamo.weebly.com/uploads/1/3/4/6/134676104/jogarevode_wizete_juwofewoje_nolosa.pdfIn PDF document text
    • https://cdn.sqhk.co/feketukadoz/gjfgfd5/20242041541.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/fghjaRZ/bomuj.pdfIn PDF document text
    • https://bizavewes.weebly.com/uploads/1/3/5/3/135323934/7ec8d63.pdfIn PDF document text
    • https://cdn.sqhk.co/xarozowuzosa/jhdgitP/jexexomerijewaxaxakejuwoj.pdfIn PDF document text
    • https://cdn.sqhk.co/lokutibu/yhfhc7p/influencer_marketing_hub_tiktok.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/satulibaren/53164408226.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_off0000cef5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF5 5520 bytes
SHA-256: 4bda3cbccda8bc6c0d670f6e6384acbc8eed5c6b7e64d42683ed4c6c84dab27a
font_01_sfnt_off0000e1b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1B3 11076 bytes
SHA-256: 8fe262931fd1870320f4304618bfbb4f33528862f78ea42e760d835472bc79da

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