Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ad0c4c59ddfa0b…

MALICIOUS

PDF

73.7 KB Created: 2021-01-03 03:20:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: fd0390340da7ca371c95aa294172619a SHA-1: 9a63315accf7d7fd6205c0b13f3f570db408f2ce SHA-256: 95ad0c4c59ddfa0b0c89977f7fa3e92282e69b6331b845a22880fa0a09db3794
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 flagged by multiple heuristics, including a critical ClamAV detection for Pdf.Phishing.Trojan, and an ML classifier indicating maliciousness. The document contains numerous external links, many hosted on disposable domains, suggesting a link farm or phishing attempt. The presence of 'wasteland+2+pc+game' in one URL indicates a lure to attract user clicks.

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://trafffe.ru/aws?utm_term=wasteland+2+pc+game PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5f8b4874474ea.pdfIn PDF document text
    • https://rorezumi.weebly.com/uploads/1/3/4/5/134591247/toviterisigade_tapuva_doban.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475383/normal_5fd80bbe34eab.pdfIn PDF document text
    • https://cdn.sqhk.co/jagakutojut/hgjic70/nobabodunopit.pdfIn PDF document text
    • https://fotofewoxa.weebly.com/uploads/1/3/4/8/134849098/7151712.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/2039114.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/Hnhgw2D/fafadug.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390366/normal_5fe24421723ee.pdfIn PDF document text
    • https://zijovegumasapal.weebly.com/uploads/1/3/4/3/134307166/gemoponaliv.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/0508dc01-6640-4bc6-8cc1-65454fd42109/rivowon.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_off0000e316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE316 5440 bytes
SHA-256: 6f2034711f3f480344645b228e70774d2df3c1b08fe5b135b284e48be5c0b864
font_01_sfnt_off0000f599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF599 10816 bytes
SHA-256: e033c5e44c039d4bc154210b0e32c605cf5029ac2146d0aa9f7ee398b19ecd55

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