Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c0025b750656b1…

MALICIOUS

PDF

71.6 KB Created: 2021-02-27 13:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-04
MD5: 8708faca5888f74bca7720c8bf80088e SHA-1: beeccd86d33fcbfa5308af7e74b12b0ee381d648 SHA-256: e6c0025b750656b117fae4820beed70eddeedb48a776b484970602b260bf059f
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 or trojan variant. It contains numerous embedded URLs, with a high-risk heuristic identifying it as a link farm on disposable hosting, pointing to suspicious domains like 'reduslim-italiaofficial.site'. The document body, though heavily obfuscated, suggests a lure related to a user guide, aligning with phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://druttle.ru/award?keyword=bissell+expert+proheat+essential+user+guide PDF link annotation
    • http://reduslim-italiaofficial.site/cs_1.6_indir_csduragix9e1h.pdfIn PDF document text
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/rewojifos.pdfIn PDF document text
    • https://moviwinexanasi.weebly.com/uploads/1/3/4/3/134314602/xuwuwis.pdfIn PDF document text
    • http://nokojatagi.mywebcommunity.org/gegobezalumifegewojed.pdfIn PDF document text
    • https://pazunorafozide.weebly.com/uploads/1/3/0/7/130776571/zixove-tezefopepu-kadusuluzuvesip.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412767/normal_60258033ec229.pdfIn PDF document text
    • http://jokojujut.medianewsonline.com/tutorialspoint_hibernate_many_to_many_mapping.pdfIn PDF document text
    • http://vwwv-avito.online/57033609249199i2.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
    • https://s3.amazonaws.com/petubapizo/b_braun_user_manual.pdfIn PDF document text
    • http://wiwosotu.myartsonline.com/cocina_criolla_argentina.pdfIn PDF document text
    • http://lozepis.epizy.com/17583851228.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_off0000ce17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE17 5220 bytes
SHA-256: 18e82fe1b1c66710df9e3b014728476ab872359c5ff7887c71ec8a2b5db4ca34
font_01_sfnt_off0000dfce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFCE 10196 bytes
SHA-256: 085d89ccf8f92868f756ff787276e708414b31555496ba368d466e52b3d76b27
font_02_sfnt_off000102bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102BF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

Open this report in the interactive analyzer, or submit your own file for analysis.