Malicious PDF — malware analysis report

Static analysis result for SHA-256 1fcfb6d46cf567e7…

MALICIOUS

PDF

66.7 KB Created: 2021-02-24 04:49:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0313c08f1769b0910f848af73d689454 SHA-1: 859280ba880cc8a4100b98ea7bbd90f5f3044abc SHA-256: 1fcfb6d46cf567e7e24d7bec4d58bd0314ab5b2b8ecd3c1afca332c59c1acbb6
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to appliance repair, which is a common tactic for phishing or malware distribution. It embeds an external URI pointing to 'baarspo.ru', likely serving as a malicious redirect. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://baarspo.ru/strik?utm_term=how+to+reset+kenmore+dishwasher+model+587 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408598/normal_60267db4e8725.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529087/normal_5fe097bf8e6b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368751/normal_5fe18cdbb9ad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417046/normal_601ddd758252a.pdfIn PDF document text
    • https://cdn.sqhk.co/dovinokobez/2GRgfih/napetuzomapenefilomidavid.pdfIn PDF document text
    • http://kernig.store/marakubrfc89.pdfIn PDF document text
    • https://cdn.sqhk.co/pupevadojas/OgeBhgi/wavexafufigivejiz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447085/normal_6011c43e741c9.pdfIn PDF document text
    • https://cdn.sqhk.co/tunuviju/Ijegehb/15137479679.pdfIn PDF document text
    • http://return-0.com/best_affiliate_site_templateh2q8s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366008/normal_5fe13970942d5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420459/normal_601ec68db7be0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471941/normal_60109da602d67.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/bestard_canyon_guide_boots_shoes.pdfIn PDF document text
    • https://s3.amazonaws.com/xokebore/vufirimabifazu.pdfIn PDF document text
    • https://s3.amazonaws.com/tufujifinobiro/linok.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/7495053398.pdfIn PDF document text
    • https://s3.amazonaws.com/zoxewudunigus/kigula.pdfIn PDF document text
    • https://s3.amazonaws.com/xisakazelelinim/takuzifelamoxewa.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_off0000c87c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC87C 5580 bytes
SHA-256: 759203ae591e979398ccfcbda74d7f28843df087a80edcfc4e51932541c6cbe5
font_01_sfnt_off0000db69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB69 10020 bytes
SHA-256: ff93aa5f794ddff01ee479ff78416d9f58f8add7236ab28d046f739859480744

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