Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b18ee5ef0cfc87…

MALICIOUS

PDF

76.9 KB Created: 2021-06-10 19:56:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e0792a3f5314e19d062b8c0c08ddaeae SHA-1: ce4f921262562392d1eac3f70ec6fb675b15d269 SHA-256: 07b18ee5ef0cfc87fd076eac68109ec90139d96cf83b6144ef933de3386888a9
126 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://huntic.ru/pbw?utm_term=vendor+termination+letter', which is likely a phishing lure or a redirect to a malicious site. The document body, though heavily obfuscated, suggests a 'vendor termination letter' pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://huntic.ru/pbw?utm_term=vendor+termination+letter PDF link annotation
    • https://jexurelo.weebly.com/uploads/1/3/4/8/134853401/libazimomusijufugi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413243/normal_60279e9695a82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484399/normal_60c1d4d65c482.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417308/normal_5fe78b4ca3769.pdfIn PDF document text
    • https://katalajoguv.weebly.com/uploads/1/3/2/7/132740778/2728637.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494417/normal_5ffdc7dc935b4.pdfIn PDF document text
    • https://pajilolupifi.weebly.com/uploads/1/3/2/3/132302794/sigedixomu.pdfIn PDF document text
    • https://jobozisibipiw.weebly.com/uploads/1/3/4/5/134581899/kobezoxorolivo-jovobisokuniz-lebaxanogam.pdfIn PDF document text
    • https://mepubigavij.weebly.com/uploads/1/3/4/5/134599646/148c89.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366633/normal_5fc692603c9f3.pdfIn PDF document text
    • https://geselumagema.weebly.com/uploads/1/3/4/6/134695037/e7bda736.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408330/normal_601863809d3d1.pdfIn PDF document text
    • https://sidusumidiwef.weebly.com/uploads/1/3/4/3/134366372/koxijopad_begatonofokol_lepaposesuvave.pdfIn PDF document text
    • https://zanasebumafuwaj.weebly.com/uploads/1/3/4/8/134899829/1e8ab9ee9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368735/normal_604f01906b05d.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/5a384cb2-08f5-46a9-a635-ec95d45b80ce/north_indian_side_dish_list.pdfIn PDF document text
    • http://jufugoxula.pbworks.com/w/file/fetch/144633720/fedutisazokojoj.pdfIn PDF document text
    • http://gafuxexosaru.pbworks.com/f/how_to_write_a_sentence_third_grade.pdfIn PDF document text
    • http://tejipufiwuma.pbworks.com/w/file/fetch/145067955/pokemon_mega_adventure_apk_download_for_android_gba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeac52cf-687e-4a52-83a8-94e0146919f0/gegufoxolixotibomuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/398084bf-827c-49d1-a33c-8cfece4f08c2/gebamukilovi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/552c6aed-4aa3-4baa-a84c-d811401ff405/bobonevukujiji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb08dd7-989c-4c20-af89-44e5c4e10bb4/86908750512.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 4756 bytes
SHA-256: 969efb3c2889ae7d242e09c195d4916312202bd5457b05299157e34e1b1d4d0c
font_01_sfnt_off000101a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101A8 10732 bytes
SHA-256: 74980de4b33a28ebddc93d20f22abf92f1d96ee3f4d5c342f8db654c3fcc8d4e