Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b6ebff638e42a5b…

MALICIOUS

PDF

69.3 KB Created: 2021-02-17 03:38:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 424f51551279fd82f957e5a95a20f207 SHA-1: 9fc9605ecbe4a3d1dc15728b455ebbd4905fea3f SHA-256: 8b6ebff638e42a5b42955c068c56ae4107b012fc7d0cb997f046953cf819b115
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as a search result for a technical document. This URL is likely used to host or redirect to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=color+correction+handbook+second+edition+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4384817/normal_5fdeb74b73d06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461786/normal_5fd99f53766f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467950/normal_5fc6ff8466d6f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380078/normal_5fcce24f7697e.pdfIn PDF document text
    • http://lami-lashes.site/mimezb2dfo.pdfIn PDF document text
    • http://harmony-market.ru/69624864627i9028.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411220/normal_5fe2c00da9492.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464871/normal_601bfcdb89133.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369911/normal_5fd85168ec237.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407299/normal_602a3e343be34.pdfIn PDF document text
    • https://cdn.sqhk.co/gujuvizaja/13jc9dC/89571015973.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pikakodi.rf.gd/gujan.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_off0000d2ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2EE 5352 bytes
SHA-256: 26af33fc9a73e254651bdbfc344502e403bc777f251e435ad9b63e5986a06299
font_01_sfnt_off0000e510.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE510 10372 bytes
SHA-256: d180b0a790cfd0c51d2174b7bf0fc3ecb93c9b59a0c66a61b571e06116e7c43a

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