Malicious PDF — malware analysis report

Static analysis result for SHA-256 7499ad5ae6b7ea30…

MALICIOUS

PDF

71.1 KB Created: 2021-01-26 11:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 082b82e9b67b22e737bad475fa7cf1d7 SHA-1: 8ae0b0bcd66d1938db81c9d2dba730bf3a0ce515 SHA-256: 7499ad5ae6b7ea30332d52ffffd355bab54155a1d221299689af18fdcbecdee4
196 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
  • 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.
  • 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://jottigo.ru/aws?utm_term=battlefield+v+deluxe+edition+pc PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4450259/normal_5ff22687d03f2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365608/normal_5fdd475a45a3d.pdfIn PDF document text
    • https://lipuxavevafip.weebly.com/uploads/1/3/1/3/131398459/5503344.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488102/normal_5fd07a4bae595.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/jsAzVha/ganofewifem.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/gjmggOu/file_manager_apk_download_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/najafizox/TEYT0hh/princess_dress_up_games_free_download.pdfIn PDF document text
    • https://bipipabogudas.weebly.com/uploads/1/3/1/1/131164499/guvebonibebizo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495413/normal_600716318aed4.pdfIn PDF document text
    • https://cdn.sqhk.co/zevukodixu/zbigifa/super_dragon_ball_heroes_ultimate_mission.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_600e089b803a9.pdfIn PDF document text
    • https://cdn.sqhk.co/gasajolop/O6jfUii/penalty_kick_games_online.pdfIn PDF document text
    • https://likerediweraj.weebly.com/uploads/1/3/4/6/134691167/vonebukipiwa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454052/normal_5fec1d8642098.pdfIn PDF document text
    • https://sapigufebo.weebly.com/uploads/1/3/4/5/134592603/fukixevuli-gimulebu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476434/normal_5fd339b0e4eba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366633/normal_5fcdb885ea33b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503033/normal_5ff5c277e29eb.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_off0000daa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAA4 5052 bytes
SHA-256: 2f01686e4327e021cee2794ebeb5bd5df7ce599cda9fd7994b09f6623b3cd2d2
font_01_sfnt_off0000ebfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFD 10416 bytes
SHA-256: ef3c24e6bbb2c6654784d9563268fd3d1f182b5c910ae8ba7717405f9dad0d91

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