Malicious PDF — malware analysis report

Static analysis result for SHA-256 de4a49424fc28391…

MALICIOUS

PDF

70.3 KB Created: 2020-11-10 05:50:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-04
MD5: 5a572e1c05d6f4c9966dafb1ff83d3e6 SHA-1: 4648273f37545f7b61008550ec62c9a21e5bd5eb SHA-256: de4a49424fc28391617f7f1a1919c8741438747f5bf2d39b09b068be49d57c22
274 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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.
  • 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://cctraff.ru/123?keyword=call+of+duty+black+ops+3+zombies+apk+download In PDF document text
    • https://zajasonasijo.weebly.com/uploads/1/3/4/6/134627958/tazavu.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/abdullah_novel_part_2_online.pdfIn PDF document text
    • https://julupovopanar.weebly.com/uploads/1/3/4/7/134732987/gibarel_masigif_jariradabu.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/letobumimasi.pdfIn PDF document text
    • https://rudofodirofebas.weebly.com/uploads/1/3/0/7/130739781/6152703.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/indoor_marijuana_horticulture.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/google_com_seasch.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5f9ead8ae48a8.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/8085188.pdfIn PDF document text
    • https://kepamimap.weebly.com/uploads/1/3/4/6/134609022/a55eb63ef5.pdfIn PDF document text
    • https://sofuwikomu.weebly.com/uploads/1/3/4/3/134308783/ccbf2b2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000c2c3.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000c2c3.bin)
    • https://uploads.strikinglycdn.com/files/441e1a8f-2097-46f6-9577-a372fbce3478/bose_radio_manual_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e6c38b0-cfcc-4d8d-8a04-98177b6b3533/2890593727.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 extracted file (font_00_sfnt_off0000c2c3.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c2c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2C3 5720 bytes
SHA-256: 0b2b1414d2eb660878b7005f0b00b80b62845b7e0e454addc7d5c46ec9e440cf
font_01_sfnt_off0000d648.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD648 2140 bytes
SHA-256: fa98316bad0ee393e4244be63b1d230beb4724cf855be96ad4f2c87a5b302ae2
font_02_sfnt_off0000e022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE022 14504 bytes
SHA-256: db1fe00e5c640eadb42ad942167f88d426b8990e274c9913f283079c0835d8c2