Malicious PDF — malware analysis report

Static analysis result for SHA-256 9729a9d8ed1260db…

MALICIOUS

PDF

74.9 KB Created: 2020-12-29 19:35:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe5ce9e10b0dd7614099d6b79d86995f SHA-1: d4bf0aa6f76835747983cd30437631ccb37d3e83 SHA-256: 9729a9d8ed1260dbec6dcdeb7f7cdd16be8ab4e6b808f8a1301dd2fae9893078
244 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to disposable hosting services and redirectors, indicating a link farm designed to lead users to malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=happy+popcorn+glass+burst+offline+games+for+android In PDF document text
    • https://cdn.sqhk.co/vuxesojogugu/gfpihUG/iphone_digital_ringtone_mp3_download_high_volume.pdfIn PDF document text
    • https://dalagusixofu.weebly.com/uploads/1/3/4/8/134853238/46504bb2.pdfIn PDF document text
    • https://gudojovevisepu.weebly.com/uploads/1/3/4/3/134314990/peduwenojevakal.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369657/normal_5f88a685af248.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452599/normal_5fb9b3953a188.pdfIn PDF document text
    • https://xuwosanilenerev.weebly.com/uploads/1/3/4/9/134900173/sutafida.pdfIn PDF document text
    • https://tadivibudup.weebly.com/uploads/1/3/4/8/134899420/reduzojujopo-natimixan-zanol-kopixaw.pdfIn PDF document text
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/kabakulisulatuwu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f817f040-d488-49e1-b574-377269cdc24d/nuwejoliva.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82752b07-cb12-4042-a0ba-c85471132e4e/fisopolapefuguxonemato.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e858fa4e-be6c-4499-899a-c4bbcad7e595/survival_heroes_apk_mod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91014826-d7f6-464e-8dba-af82e2a3cdbd/cuento_cartucho_de_nellie_campobello.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13fddbd8-c3d6-49cb-8fe0-b4abaaded379/54257543185.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c93a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC93A 5680 bytes
SHA-256: c77edf03fcf195fa8b1d908763e80ff7d4123a13091aa79f241142135a42c3f4
font_01_sfnt_off0000dc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC6F 1936 bytes
SHA-256: 84daf345e21b08075a6e329eeacb0a13a0447ddcc3efc64e98a9a4ab9c6a9d9d
font_02_sfnt_off0000e5af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AF 9804 bytes
SHA-256: 8f282ebc9bd28be300f088813f95dcaad16139184df5095c41b9d92b0fe8ba04
font_03_sfnt_off00010758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10758 16544 bytes
SHA-256: 1b44218257806f750c7fedc2cca84b6b30ff477c2da870f9e14c0541087d9c9f