Malicious PDF — malware analysis report

Static analysis result for SHA-256 1994a958c1d29238…

MALICIOUS

PDF

80.8 KB Created: 2020-12-27 14:00:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 8fe69d2d211afd0f0c5a6020107a9b36 SHA-1: 1b2be50de12991e6d9dd338886d947d77b29698d SHA-256: 1994a958c1d292385d1b18b91164e96fc56942bbecca41003c4e572fa42e833a
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 'https://gettraff.ru/123?utm_term=ffxiv+stone+vigil+hard+guide'. This URL is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://gettraff.ru/123?utm_term=ffxiv+stone+vigil+hard+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379032/normal_5fba3c4462f22.pdfIn PDF document text
    • https://cdn.sqhk.co/rapavuse/cgfjhhc/78721515620.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/baxekojojexusol/balawijojavaperixebuton.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09ef9e16-d5d1-4929-a565-988e62613aaf/35370736218.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/18436081546.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/jagogiwunot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8820f73e-00db-45f8-854a-b9793a33b380/wosagalusotokisekavogoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f79ba292-6698-462b-b15a-09e9858779b9/49984491940.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/st_joe_s_martinsburg_wv.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/anemia_deficiency_iron.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/dipifuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aef7630c-a9a5-4160-bd24-497d848231ab/gogopozisixagulalivefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79045440-0584-4742-9a85-edee0495496f/rewiruwulere.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e95a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE95A 5252 bytes
SHA-256: 1981573a34c922525fb3ee01e352ec7ab0131eb5527e0ae54ba0b84d91368807
font_01_sfnt_off0000fb3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB3F 11424 bytes
SHA-256: 4218e2ed66b5de02ea84c5f25a9c18cd979c24aac9bce90c6da9f6052a1d5edd
font_02_sfnt_off0001216d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1216D 16092 bytes
SHA-256: e9fe716c2abc985b12a899a49d5539e4e8be1b56d50c083b30290d85a2a7c848

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