Malicious PDF — malware analysis report

Static analysis result for SHA-256 63589c1c9ce88723…

MALICIOUS

PDF

73.6 KB Created: 2021-02-27 10:46:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 0638d9fe46c47ea6ff95c21b94eb1e58 SHA-1: a7d5b22fa85f6b36a25f53af1a6cd0da0107ac7d SHA-256: 63589c1c9ce88723902712f17bd79ed503c651f89dd5c6165a76c57d661c01a3
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, many pointing to disposable hosting or unknown reputation sites, suggesting a link farm designed to redirect users to malicious content. The document body, though heavily obfuscated, appears to contain metadata related to 'Dungeons and Dragons' and wkhtmltopdf, which is likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://seumenha.ru/award?keyword=dungeons+and+dragons+basic+rules+1981 PDF link annotation
    • https://pexarokozisakim.weebly.com/uploads/1/3/5/3/135313666/kalifotekukore-kalurevu-titukixax-ruvuvadudu.pdfIn PDF document text
    • https://cdn.sqhk.co/jegamaxegev/jeLJhah/20951803937.pdfIn PDF document text
    • http://pet-guru.shop/amazon_prime_music_unlimited_family_cost_uk5rkjb.pdfIn PDF document text
    • https://cdn.sqhk.co/pigajifaw/ya4ixgj/teacher_appreciation_quotes_from_parents.pdfIn PDF document text
    • https://vipagazowarofi.weebly.com/uploads/1/3/4/6/134685611/girafuxiwuw.pdfIn PDF document text
    • http://wewogokuwidu.mywebcommunity.org/muzawoxibisipuboxaxusop.pdfIn PDF document text
    • http://gelchlen.fun/644996046445k9r0.pdfIn PDF document text
    • https://cdn.sqhk.co/xawobovuji/C5iejc1/15025708995.pdfIn PDF document text
    • http://texoraw.sportsontheweb.net/jbl_flip_3_connecting_bluetooth.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/scott_pilgrim_vs_the_world_cast_brie_larson.pdfIn PDF document text
    • https://diriremipujuna.weebly.com/uploads/1/3/4/2/134265666/7b22236.pdfIn PDF document text
    • http://akfb.online/edwin_friedman_generation_to_generation33236.pdfIn PDF document text
    • http://hamlikjorettoop.ru/street_racing_syndicate_cars_listr45zd.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://bajekixizosi.myartsonline.com/what_is_a_feature_story_in_agile.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/vavugal.pdfIn PDF document text
    • http://tuwafexom.epizy.com/bibawuzifiwegifajisikaji.pdfIn PDF document text
    • http://jizofaludem.epizy.com/zujazesumuvolesevodoruji.pdfIn PDF document text
    • http://sojikavufor.rf.gd/56292819153.pdfIn PDF document text
    • http://pinopog.rf.gd/wapulokizuvorutaroxanizi.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://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD825 5448 bytes
SHA-256: 5c87846bd7f460df2ec25311d097c0720e340d19bda9a0c09d48df87da3b878b
font_01_sfnt_off0000eaae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAAE 10312 bytes
SHA-256: 53923be6e01195c2f5c431eb3be32f055e32363e57e4a138d2584f8fe15f0ebe
font_02_sfnt_off00010df1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DF1 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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