Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e79d8cd1863f7cc…

MALICIOUS

PDF

70.1 KB Created: 2021-02-27 15:57:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4f56e2d596d43f6d21775a355cf44517 SHA-1: 039578a109c107736e4d8862fa57a8d027a9566f SHA-256: 7e79d8cd1863f7cc6300a2f8e72b86cb47021fbd4d561d00ffabd19358a8be66
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 document body, though heavily obfuscated, contains text related to 'Bosch dishwasher parts mounting brackets' and is associated with an external URI pointing to 'gimoguvi.ru'. This suggests a phishing or content-luring attack pattern designed to trick users into visiting a potentially malicious website.

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://gimoguvi.ru/123?utm_term=bosch+dishwasher+parts+mounting+brackets PDF link annotation
    • https://cdn.sqhk.co/zetanitanedo/gcoijWy/fetilexuzo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453909/normal_5ffcc90d793e6.pdfIn PDF document text
    • http://laluwaraselolar.mywebcommunity.org/gerund_infinitive_grammar_exercises.pdfIn PDF document text
    • https://fomemifeju.weebly.com/uploads/1/3/4/7/134769467/niseberixigefo-geperiwujuroju-dasoweme-bolesetasir.pdfIn PDF document text
    • http://tufepuwaw.iblogger.org/flipbook_animation_ppt_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485570/normal_5fd965ebcebe0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480383/normal_601c8a785db84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468819/normal_5fd634d5ee449.pdfIn PDF document text
    • https://cdn.sqhk.co/laruxibut/iaSgigc/74642330747.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465250/normal_60049311b3ba2.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://rubuvajaroxe.epizy.com/avicii_the_nights_piano_sheet_music.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/manual_de_gramatica_italiana_manuel_carrera_gratis.pdfIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/80922627708.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_off0000c40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC40F 5680 bytes
SHA-256: 5303befb6d7508cfbd8ab82a52f3172271249862c45a11773f13e065f566cf17
font_01_sfnt_off0000d74a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74A 10804 bytes
SHA-256: a5f5dd5e1517567b2520baa048092d2c41528c6e30df9504319af9a560cc378c
font_02_sfnt_off0000fbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE2 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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