Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab5f53ce9fd1b65…

MALICIOUS

PDF

80.3 KB Created: 2021-01-06 09:36:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 3f0f7e5126ca968a23fde8280eb7ad79 SHA-1: 71b29c7ca121ea1f468da8d46df4f4383abb3bcc SHA-256: 6ab5f53ce9fd1b653de8d8d6daffa0c8202e0bae33a6ba0fbe9588b646b472cc
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'. This URL is likely used to lure users to a malicious site, consistent with phishing or malware delivery. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/aws?utm_term=notarized+affidavit+of+support%2528+form+i-+134%2529 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449181/normal_5fa2c9b016b68.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502436/normal_5fe1960346678.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_5f8f9ab745e18.pdfIn PDF document text
    • https://guxemufisi.weebly.com/uploads/1/3/2/7/132710659/fatire_tesom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369629/normal_5f95b8d6d27b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480899/normal_5fc3f62433e98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469359/normal_5feeb77245d14.pdfIn PDF document text
    • https://befakudi.weebly.com/uploads/1/3/4/5/134595811/3849969.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/begijufadi/wefebuni.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/97401590621.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/51901086472.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_off0000faa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA5 5724 bytes
SHA-256: 375dd1addef5abe882c885f74cd7cde1432b8e5439e1a5f2c7d1102afa68d482
font_01_sfnt_off00010e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E43 11128 bytes
SHA-256: 588718024bf26d6b6dc437af1e0c84b0bd7953153e4268c2b411bcc4e966770c

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