Malicious PDF — malware analysis report

Static analysis result for SHA-256 26f8f8018cc68a1e…

MALICIOUS

PDF

80.9 KB Created: 2021-03-20 21:19:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8253138d5292a3f3631e629487d66ef4 SHA-1: 3468b45f1ac5370052ee97e1e4c1eff2895936b0 SHA-256: 26f8f8018cc68a1ed1eee62610865d86e9e2c749b3e3bbaf84cfc998ddb79509
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains heuristics indicating it's a phishing lure, specifically linking to an SEO redirector. The ML classifier strongly flagged it as malicious, and ClamAV detected it as a phishing trojan. The embedded URL 'https://soxebez.ru/strik?utm_term=tenergy+battery+charger+instructions' is the primary indicator of the attack pattern, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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://soxebez.ru/strik?utm_term=tenergy+battery+charger+instructions PDF link annotation
    • http://reliables.ru/incoming_material_inspection_reportxp4gg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383132/normal_5fd0870aae9ad.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxuvedije/ign9gib/69031316687.pdfIn PDF document text
    • http://circleshtang.xyz/122244524097c8ej.pdfIn PDF document text
    • https://cdn.sqhk.co/towinomer/jbghsie/26665374558.pdfIn PDF document text
    • https://cdn.sqhk.co/xukigipeduve/dD8gcnA/18891998718.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379602/normal_601949364c192.pdfIn PDF document text
    • https://cdn.sqhk.co/vosizijanad/g1K8jd6/kikkerland_design_tabletop_rainbow_maker.pdfIn PDF document text
    • https://cdn.sqhk.co/kutajanode/jdhhA0i/detention_game_review.pdfIn PDF document text
    • https://cdn.sqhk.co/zopimoforaja/hflhcjg/word_borders_templates_free.pdfIn PDF document text
    • https://cdn.sqhk.co/nosuterib/eSohgLq/snapseed_photo_editing.pdfIn PDF document text
    • http://avit0.cc/60613539027sbbqe.pdfIn PDF document text
    • https://cdn.sqhk.co/zefafulolit/jnmJ2Nd/42421628674.pdfIn PDF document text
    • https://cdn.sqhk.co/dawadetugas/hcjhcgs/phase_10_world_tour_energy_cheat.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/zagapaxa/72179588060.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/51086197140.pdfIn PDF document text
    • https://s3.amazonaws.com/bufexa/17014354789.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/pirerinunopekapaxadojif.pdfIn PDF document text
    • https://s3.amazonaws.com/mejigavukolu/34258377270.pdfIn PDF document text
    • https://s3.amazonaws.com/jezekemunidup/aao_raja_dj_song.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/fejolipitaludoritaj.pdfIn PDF document text
    • https://s3.amazonaws.com/kesumasaka/la_distinction_bourdieu_espaol.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_off0000ffbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBD 5220 bytes
SHA-256: eda3adf90f31f5dd1a94fb3e5618dcb40aeb9ffe76b063a3ed53ec1a52a4073f
font_01_sfnt_off00011185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11185 10740 bytes
SHA-256: 25fdb23c4a0afa2f6cd8b29c2b03d49d86b0057992149c83f05950b023a121eb

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