Malicious PDF — malware analysis report

Static analysis result for SHA-256 29cf7e50f0e07525…

MALICIOUS

PDF

83.0 KB Created: 2021-01-17 19:24:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-18
MD5: 046087e329f07a0932643b69356553c0 SHA-1: 02f37285f6db2d71abcb777bf5055b3b00d81d5a SHA-256: 29cf7e50f0e07525a87755f1528be146cc17c6c02a4284437398065b3474b545
314 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 8

  • 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.
  • 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.
  • 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://site-1083884.mozfiles.com/files/1083884/xiaomi_mi_9_android_10.pdf In PDF document text
    • https://dofikusoru.weebly.com/uploads/1/3/4/4/134472045/dad30b.pdfIn PDF document text
    • https://site-1176273.mozfiles.com/files/1176273/demakiwakapigesaro.pdfIn PDF document text
    • https://cdn.sqhk.co/kojetovukufo/ji0ojey/pejupojevekogil.pdfIn PDF document text
    • https://cdn.sqhk.co/sufadoma/SQQuLRK/mercado_pago_brasil_login.pdfIn PDF document text
    • http://raxuzogigegekaj.66ghz.com/nomoferaxufanotawinego.pdfIn PDF document text
    • https://cdn.sqhk.co/nivunufozub/3jghggf/the_solar_system_song_planet_custard.pdfIn PDF document text
    • https://site-1175227.mozfiles.com/files/1175227/video_call_to_android_phone_from_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/hahgFHj/turomunugewom.pdfIn PDF document text
    • https://cdn.sqhk.co/zoxunoromi/PjfXiaJ/space_wallpaper_hd.pdfIn PDF document text
    • https://cdn.sqhk.co/jesotipo/2hge6B9/background_eraser_tool_app.pdfIn PDF document text
    • https://trafffi.ru/123?utm_term=leo+mayland+eduIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000f278.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000f278.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_off0000f278.bin)
    • http://dejavu.sourceforge.netIn extracted file (font_02_sfnt_off00012a73.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_02_sfnt_off00012a73.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f278.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF278 4740 bytes
SHA-256: 75506c3acd3a0118c081b3d73f4805846bc891d5c09b5d67a127997a6faa832d
font_01_sfnt_off0001028c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028C 11652 bytes
SHA-256: 8614c88773bdda9c4a6fd1f86bdec8a66dd597ed1ea4dae7ab44c1a4dd806b66
font_02_sfnt_off00012a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A73 16060 bytes
SHA-256: d1a84ba8f0e4a827a048d387db8dd5dae3538f1c7e72415b16af587a9947cdc7