Malicious PDF — malware analysis report

Static analysis result for SHA-256 493bc0c959877464…

MALICIOUS

PDF

74.1 KB Created: 2020-12-28 19:47:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc791f582ef28a13c459125671de3ec4 SHA-1: d5ec5d8f2a4858fc9f62e3ae1874d86fe79eb657 SHA-256: 493bc0c959877464853368ee77b36ca4d01be8d2c86d93c183bc4f372ca722da
154 Risk Score

Malware Insights

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

The file is identified as malicious by multiple heuristics, including a critical alert for a PDF redirector link to a known malicious URL. The ML classifier also strongly flagged the PDF. The embedded URL points to `gettraff.ru`, which is a known malicious redirector. While no scripts were explicitly extracted, the PDF structure and the malicious URL indicate an attempt to lure the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://gettraff.ru/strik?utm_term=the+mooseman+platinum+walkthrough
    • https://cdn-cms.f-static.net/uploads/4383800/normal_5fb4ee9975cc9.pdf
    • https://static.s123-cdn-static.com/uploads/4385028/normal_5fe4f55b1178f.pdf
    • https://cdn-cms.f-static.net/uploads/4381531/normal_5fb2c2a0c0c67.pdf
    • https://cdn-cms.f-static.net/uploads/4413713/normal_5f9865d47dc89.pdf
    • https://cdn-cms.f-static.net/uploads/4456398/normal_5fa1df0270c27.pdf
    • https://cdn-cms.f-static.net/uploads/4403818/normal_5fc3817755bcb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://uploads.strikinglycdn.com/files/4c6d0a50-a4bf-42a6-8c98-0d11adcfc136/en_que_consiste_el_deterioro_ambient.pdf
    • https://uploads.strikinglycdn.com/files/867b98b5-8163-4cca-a2c2-0eda7f5c820b/zefazikanazofivu.pdf
    • https://s3.amazonaws.com/liguwubore/woganasewajukodunasojit.pdf
    • https://s3.amazonaws.com/leteraxewe/phantom_of_the_opera_mask_template.pdf
    • https://uploads.strikinglycdn.com/files/507ae09f-738e-48eb-ba10-ff9729ec1519/24854675899.pdf
    • https://uploads.strikinglycdn.com/files/fc855d0d-85d3-4044-afb0-4090e0da8429/best_break_resistant_dinnerware.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d600.bin
edcddc46060f02dd2825913604655de665e7d34c44a512aebc9a6e74d52046bd
pdf-font-stream PDF embedded font (sfnt) at offset 0xD600 5220 bytes
font_01_sfnt_off0000e7ad.bin
9024a42a90559cf014d5c363bb64fd039b0e248a0a477e7a39a16269e6154903
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7AD 11312 bytes
font_02_sfnt_off00010d73.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D73 4324 bytes