Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de7e225456bc5ac…

MALICIOUS

PDF

77.3 KB Created: 2020-11-16 15:31:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-29
MD5: afd701acccc9a9b78ef4eb7dba2353a6 SHA-1: b313ca6a8181372922d149ad9938f59fb24a1898 SHA-256: 4de7e225456bc5ac9057a6c72d8c121a51ae2c4f572964606ec34b0d6c8269aa
334 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://s3.amazonaws.com/jazofi/2002_anne_marie_lyrics.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5f9484f650b95.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/1452768726.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/new_destination_b2.pdfIn PDF document text
    • https://s3.amazonaws.com/fizufapu/steve_berry_latest_book.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/15960902919.pdfIn PDF document text
    • https://firedisivimi.weebly.com/uploads/1/3/0/9/130969818/63fb1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393754/normal_5f94e170b4669.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372354/normal_5f8cf72b55b12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409811/normal_5f966bebe9af9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447108/normal_5fa985b2d73b0.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/ridemaxawinejen.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/cyrano_de_bergerac_text.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367922/normal_5f8de17b97437.pdfIn PDF document text
    • https://judorobizud.weebly.com/uploads/1/3/4/4/134455398/sewovekexoresafowad.pdfIn PDF document text
    • https://traffmen.ru/wb?keyword=pebble%20caller%20id%20android%20pieIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000dd0f.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000dd0f.bin)
    • 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 extracted file (font_00_sfnt_off0000dd0f.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off000112c7.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off000112c7.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD0F 5028 bytes
SHA-256: 266c7c604696337bb69e5218ffd23061a225767064f20de11bbd93dd07b8c5cc
font_01_sfnt_off0000ee30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE30 10712 bytes
SHA-256: ba1fc5029b5f366ddd07b814e31942aee62331b645619957e8f7e94eece651f8
font_02_sfnt_off000112c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112C7 16084 bytes
SHA-256: 40362fbc9d771ad4ffebf23d851d0e608cbe5e910bc9c9578be8a04431091e8d