Malicious PDF — malware analysis report

Static analysis result for SHA-256 bffe515ee133f758…

MALICIOUS

PDF

65.4 KB Created: 2020-12-02 02:50:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 283124ee8ae5579ceabdb7ee737e5bfd SHA-1: d9eb39094b731d497ee9cd57cbbef86b04552b93 SHA-256: bffe515ee133f7588f2c9b98f55283d73cd7acb41b455bc67860ac8ecc1ee69f
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing indicating a malicious redirector link to 'ggtraff.ru'. ML classification and ClamAV also flagged the file as malicious, specifically as a phishing trojan. The embedded URL is likely used to lure the user to a compromised site for further malicious activity.

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
  • 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.
  • 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://ggtraff.ru/strik?utm_term=the+hobbyist%2527s+guide+to+the+rtl+sdr In PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/fb90b66957c.pdfIn PDF document text
    • https://duparumiwope.weebly.com/uploads/1/3/4/7/134707207/zilejasigiwuvoz.pdfIn PDF document text
    • https://motutipe.weebly.com/uploads/1/3/4/6/134674000/nader.pdfIn PDF document text
    • https://rimosuvifakub.weebly.com/uploads/1/3/4/3/134310068/sosisesepamasa.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/c11d049b-5bd3-4254-a6bb-3dd782594d47/46956556787.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57f453398ff75154cec93/t/5fc647b6e18c5c478ed0b15c/1606830007510/zoziniraf.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/14967097226.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc33495affbf90a66f9667f/t/5fc456b5173fb5383b2de334/1606702774705/jigul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/37b47624-7564-4d85-9ecc-8c7f961d3c17/good_christian_men_rejoice.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc57785be9b69395129ae53/t/5fc677e95147b148041233c8/1606842345203/13892203106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe1fdebc-86da-4393-9078-6c96e5b9300a/92548259930.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_off0000c2a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2A2 5100 bytes
SHA-256: 055261e69caba61d07dc9b6d2d69e6ed9cac6c156c9a1bdb896ac0bfd1b71223
font_01_sfnt_off0000d3fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3FD 10896 bytes
SHA-256: f251adc8852797958990bce20c21a12bce7bad21e4efe071f4cd8abb682fbbc7

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