Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a1704c92d5355d3…

MALICIOUS

PDF

65.0 KB Created: 2020-12-23 03:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 27a15c632df6e2a871b554d48b85aa59 SHA-1: e00ff3fa74ffac0d0183b782934b09f532bc5330 SHA-256: 9a1704c92d5355d37d400a771ffb2be06b94f4bb748f4b2c07a68c86abeed38f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating it is a phishing or trojan distribution attempt. The document contains numerous embedded URLs, many pointing to disposable hosting, and one specific URL, 'https://trafftec.ru/strik?utm_term=hublot+big+bang+arctic+camouflage', is highlighted as a potential lure. The presence of external URIs and the link farm heuristic suggest the primary goal is to redirect users to malicious sites, likely for credential harvesting or malware delivery.

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://trafftec.ru/strik?utm_term=hublot+big+bang+arctic+camouflage PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393369/normal_5fa6b608c2742.pdfIn PDF document text
    • https://jipunexekamu.weebly.com/uploads/1/3/4/5/134588935/2ed80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377380/normal_5fdaad7a1da74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417429/normal_5fd0a259dfbcd.pdfIn PDF document text
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/supuzeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379626/normal_5fcf11e29b938.pdfIn PDF document text
    • https://dadekojulaza.weebly.com/uploads/1/3/4/3/134320805/2dbfcc9647da.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/dosimuzep.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://uploads.strikinglycdn.com/files/9261f771-8842-439d-9366-f3e77afd87c7/57547227249.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d359901c-4ec8-447e-8024-254ef9c4a548/benopij.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7a5bf9849b27a00a7ae4e/t/5fccf4e3fe657040d59341b0/1607267558696/zisavaxoxe.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_off0000b43f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB43F 5004 bytes
SHA-256: 873ef259671f4bd65dd9697a867b98504a902a63f528f71a5ae8ecad3ae9505e
font_01_sfnt_off0000c529.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC529 10732 bytes
SHA-256: ab2f5120b9876478cc4833fe3e747f6a032b5ae7c45c615c440d36960250a21f
font_02_sfnt_off0000e91b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91B 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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