Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6032f6940d6a21c…

MALICIOUS

PDF

63.9 KB Created: 2020-11-26 10:49:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 94fa0a44975623c27d0c1f80fe68ca7e SHA-1: 1c0c5cc0ee3ce2a35707098494b7bf4a35a02cbb SHA-256: c6032f6940d6a21cc5f2c5ea6fa3cb79e9ad556679af859bb5222ac194fdc648
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This indicates an attempt to lure the user to a potentially harmful website. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the nature of the redirector suggests a phishing or malware delivery attempt.

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/123?utm_term=30th+wedding+anniversary+gift+ideas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379477/normal_5f9d6a83af468.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409606/normal_5f9edfcfbaee5.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/nuxomigo/pulofojadilububedetuwep.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/66334128741.pdfIn PDF document text
    • https://s3.amazonaws.com/napisakaluja/relaxing_piano_music_for_studying.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6652d248-b6c5-4fd9-b1e9-51c3b8d33dc3/lookism_jay_x_daniel.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/victorinox_swiss_army_watch_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/pusubegebolewutip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69cc67c-502a-4f0d-9745-2524a4e6588b/wunupobeziwerinug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e38cdba-807a-42b7-935c-0450fee3f886/mizadul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38cc2286-7112-47ee-b727-2bf6fed8d5f8/xefobogelar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a159429a-f799-414a-a6b8-afba1ab515dd/89091942001.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/fumoto_oil_drain_valve_7.3_powerstroke.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/lexonijipirabojutop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1b91d9f-c339-4632-b88a-b149f1c0346b/89995589513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0494e98-0f18-48ab-b7ea-9f154b3424d1/99751799833.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_off0000bda8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDA8 5600 bytes
SHA-256: 8e23dc40d7ac0077f24e37d16f3deef0456f95f78cfa7ba2f2a8bc4c2d1b2acf
font_01_sfnt_off0000d0d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D3 10036 bytes
SHA-256: 2ea64a9d45a59efc9783e7d11fbe457d7bec4589762ae77a9f4100ebf982337a

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