Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd59b1f042f705d6…

MALICIOUS

PDF

68.7 KB Created: 2021-01-03 08:48:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 557bc9e2a3113190f8794aae6068d796 SHA-1: bf91371a908916ca3889e24367fec02d7fc530b9 SHA-256: dd59b1f042f705d61e52536b5a52d9ad7f8340a96693ac6f7b69a86f580aee1e
154 Risk Score

Malware Insights

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

The PDF contains a link to 'traffine.ru' which is flagged as a malicious redirector, suggesting a phishing or malware distribution attempt. The embedded URL is part of a lure related to purchasing gift cards. The ML classifier and ClamAV detection strongly indicate malicious intent.

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://traffine.ru/wb?keyword=where%20can%20i%20buy%20ebay%20gift%20card%20uk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4449172/normal_5fb78bd56506b.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/gihbghQ/morif.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/3hjhaXp/sepoziwufikisotukeriram.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417525/normal_5fa40e9de0a43.pdfIn PDF document text
    • https://girenofozajete.weebly.com/uploads/1/3/4/4/134476001/bizaxefakemakologa.pdfIn PDF document text
    • https://sibakixode.weebly.com/uploads/1/3/2/8/132814768/bc7b735791a74df.pdfIn PDF document text
    • https://givexikiduxa.weebly.com/uploads/1/3/1/3/131398224/purapi.pdfIn PDF document text
    • https://tegugozitofo.weebly.com/uploads/1/3/0/8/130874592/6c59918.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459182/normal_5fb68e188956c.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/e6176e2e-3caa-4581-9d02-f1c21cdc1bfd/dexcom_guide_for_pairing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e0c0005-2cd0-49f7-a172-42c79f7ab90b/kediwifozon.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_off0000cea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEA8 5392 bytes
SHA-256: d92932eb6159e12f9194c458a8417704087db59c9965f095ff602069b6842a84
font_01_sfnt_off0000e118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE118 10880 bytes
SHA-256: 67186086dd78ae8bdf6b46516050b867ca17d1d05041f98d97c7da40de3067dd