Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f4dd55b431b483e…

MALICIOUS

PDF

70.5 KB Created: 2020-12-07 17:22:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 2dcfbb76b1910a5a60fcd9aadc481716 SHA-1: 1e182499b771e44440361676c8c3bc22b397cab6 SHA-256: 9f4dd55b431b483e49b54839c0315bad5f7e5f8542afc25409361a46332809f6
154 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a URL associated with malicious activity, likely to trick users into downloading a payload. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is the primary indicator of compromise, suggesting a phishing or malware distribution attempt.

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://traffmen.ru/strik?utm_term=age+of+pirates+2+city+of+abandoned+ships+free+download In PDF document text
    • https://fetazudumaveber.weebly.com/uploads/1/3/4/6/134615608/f5148d62282155d.pdfIn PDF document text
    • https://movidotibapokab.weebly.com/uploads/1/3/4/2/134265591/9349732.pdfIn PDF document text
    • https://dexekuweda.weebly.com/uploads/1/3/4/7/134705305/3760922.pdfIn PDF document text
    • https://kagilovudugavap.weebly.com/uploads/1/3/1/1/131164538/gesobamogagi-gawerom.pdfIn PDF document text
    • https://gepavemu.weebly.com/uploads/1/3/4/8/134861499/3662307.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/vexeliku/soxojalagunawukasatokepag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53904e73-63f1-47f9-8c98-02b1d1f4ebf1/xerox_6515_parts_list.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/fiszki_angielski_c1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12e69658-f09c-460d-af96-df0afa87721c/38170864764.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ccd4619-74e3-4fc6-abc2-023f13ac2df7/gumegajutumovo.pdfIn PDF document text
    • https://s3.amazonaws.com/xumakomowi/31948029590.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/foxefekuxosamivodalasebe.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/18337195843.pdfIn PDF document text
    • https://s3.amazonaws.com/galinikagopit/my_talking_angela_game_please.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_off0000cf40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF40 5872 bytes
SHA-256: 6bf6d3165ea02df95ed2b377634a43db25f7e4137835081e50c54f69b5891fa0
font_01_sfnt_off0000e353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE353 13032 bytes
SHA-256: 2efeff7710bfd0ef37fa7fdd39dda3d3664ef315b89cba3f547f6a3736e2fae5

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