Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbc0062d030a6656…

MALICIOUS

PDF

78.4 KB Created: 2021-01-29 10:57:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: b8135eb974ba60ef6c6ca549ed83d28c SHA-1: 6902db559744ef30309c41a2b9e842050cbc0daf SHA-256: bbc0062d030a6656b9993202c14f959bd8a348ca3f24ebd5334d5aaa3107af43
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristic firings reveal the document acts as a link farm, embedding a large number of URLs, many of which point to disposable or suspicious domains. The presence of 'utm_term_redirector=True' suggests these links are designed to redirect users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://maypoin.ru/123?utm_term=anaerobic+and+aerobic+respiration+diagram PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4369771/normal_5fcfb583bfed4.pdfIn PDF document text
    • https://jodavetofa.weebly.com/uploads/1/3/1/4/131438562/8044793.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486197/normal_5fe33cb6dd78d.pdfIn PDF document text
    • http://gewebufokorilu.iblogger.org/91241206862.pdfIn PDF document text
    • http://jotijitod.66ghz.com/sejaliwibepamaliku.pdfIn PDF document text
    • http://tijoxuxiga.iblogger.org/rejofixesulodudokorezi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367635/normal_5ff92013e4773.pdfIn PDF document text
    • https://sirowatogiwu.weebly.com/uploads/1/3/2/8/132814809/dea040752.pdfIn PDF document text
    • https://fakodide.weebly.com/uploads/1/3/0/8/130874451/fimemizebisuxoda.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://kunipotow.epizy.com/office_space_tps_reports_video_clip.pdfIn PDF document text
    • http://vijuzoluza.epizy.com/41874786273.pdfIn PDF document text
    • http://valebuwevunav.epizy.com/xodobazumokudoxudibuge.pdfIn PDF document text
    • http://vizumun.rf.gd/54575453620.pdfIn PDF document text
    • http://zubeleboju.epizy.com/infinite_jest_reader_s_guide.pdfIn PDF document text
    • http://gadojir.rf.gd/affliction_warlock_pvp_guide_3._3._5a.pdfIn PDF document text
    • http://rebokomixuxoj.epizy.com/barricade_transformers_film.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE413 5276 bytes
SHA-256: 9b8b5a8ef8cfc4487a1707d5e7d4fbeba98447c9a2ce4d7eb6eb94ca70bc5630
font_01_sfnt_off0000f5e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5E0 11184 bytes
SHA-256: f496fcc17312da1f2340ef21d05e6e6e81c112063c2427176f38b77439223bb7
font_02_sfnt_off00011c07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C07 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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