Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc89f9333a2a275…

MALICIOUS

PDF

104.7 KB Created: 2021-01-23 06:40:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fb6801b6fe964d916b2f6bfbc4f0e143 SHA-1: 902a0a19ad467753021a8df708e5e7b275d0c630 SHA-256: fdc89f9333a2a275e49a5909d373ff64a06d6b3df41f6012efb6515b939e51b6
244 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, and contains numerous embedded URLs. Many of these URLs point to redirectors or are part of a link farm hosted on disposable domains, indicating a likely phishing or credential harvesting operation. The presence of multiple external links suggests an attempt to direct users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://traffking.ru/aws?utm_term=learning+strategies+curriculum+guide In PDF document text
    • https://demuxovepeb.weebly.com/uploads/1/3/4/3/134311881/lopivufuzar-xufanizodiwi-wegomemakabiz.pdfIn PDF document text
    • https://cdn.sqhk.co/woteruzid/icjafsE/noxigodomaraj.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/giScv0Q/magic_the_gathering_vs_warhammer_40k.pdfIn PDF document text
    • https://famuvotatag.weebly.com/uploads/1/3/0/8/130813835/321a5fb42815b.pdfIn PDF document text
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/kedepekavatipewigafo.pdfIn PDF document text
    • https://nofefikow.weebly.com/uploads/1/3/4/5/134510094/3424961.pdfIn PDF document text
    • https://seruborakumew.weebly.com/uploads/1/3/4/8/134849990/misepamujale.pdfIn PDF document text
    • https://vimavopama.weebly.com/uploads/1/3/4/7/134769365/9003281.pdfIn PDF document text
    • https://cdn.sqhk.co/wevexifimur/jcvge7j/coloring_stitch_by_numbers_free.pdfIn PDF document text
    • https://sevenunoxesu.weebly.com/uploads/1/3/4/3/134341304/lujudejizusujuxun.pdfIn PDF document text
    • https://cdn.sqhk.co/kadeposamo/fhdggiQ/fun2_2_player_games_on_phone.pdfIn PDF document text
    • https://cdn.sqhk.co/jabakujivim/joggHBj/kolizekokozurotata.pdfIn PDF document text
    • https://nowagomasililub.weebly.com/uploads/1/3/0/7/130775830/lesipife_bagumusuj_dabomosuben.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zikinevubebera.epizy.com/wikianswers_lunar_eclipse.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00012302.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12302 14476 bytes
SHA-256: 8c8ce52f88d438c01e9988e594744f9b0df969d41b9e8f110fd76c42f8b904ee
font_01_sfnt_off00015117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15117 4972 bytes
SHA-256: bdd3723918094e519788110ce2a8e4ff5b04f328a54e32efdec58a5f35112d71
font_02_sfnt_off000161db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x161DB 10516 bytes
SHA-256: 91ad17d79cc6fce3af25244b627cc72ea26e9f92141be38da944c9d70b86a177
font_03_sfnt_off000185a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x185A9 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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