Malicious PDF — malware analysis report

Static analysis result for SHA-256 68435ded260089e7…

MALICIOUS

PDF

81.8 KB Created: 2021-01-06 20:42:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 255d10e59fd831de4893ff73ffda6bc3 SHA-1: e0fb49898657485ceb3d4b9e037827ce9c6dff76 SHA-256: 68435ded260089e72e07a5023dc6fee83aaab8ae42e143e6a6291f76b68604f6
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by a ClamAV signature and an ML classifier. It contains an embedded URI pointing to a suspicious domain, traffking.ru, which is likely part of a phishing or malware distribution scheme. No scripts were extracted, but the presence of the malicious URI and the overall detection suggest a phishing 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/aws?utm_term=cisco+amp+threat+grid+datasheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450138/normal_5fb74e3b146ed.pdfIn PDF document text
    • https://cdn.sqhk.co/kewusikata/jcMjcih/salujevabibawuromademoza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392652/normal_5fde5797d3f85.pdfIn PDF document text
    • https://cdn.sqhk.co/kurafuso/hiME9F0/new_baby_panda_bubble_shooter_game.pdfIn PDF document text
    • https://cdn.sqhk.co/zifiguwosu/biihfWv/44711101986.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/e51025db-2813-4954-a453-c6b34a4e26d7/memes_and_vine_soundboard_gold_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8fe30487-84d1-4a71-b75e-d08e4a27ff1c/hearts_of_iron_4_guide_steam.pdfIn PDF document text
    • https://s3.amazonaws.com/tigovatolis/13276510058.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c6d476-8cbb-467f-a267-797cbc9d7f74/wondershare_filmora_7.8.9_clef_de_se.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2229bdc4-3bbf-450c-bb06-22dffe53bce9/kejofosasi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e4c6b20-96cd-4869-9c4b-5e3914f618de/17904438502.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_off0001021a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1021A 5360 bytes
SHA-256: e4578a00da4c6b8269e10c6d2d44d33d895e76257106a5b4ab128c1c91bf74b9
font_01_sfnt_off00011423.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11423 11196 bytes
SHA-256: 404ade3cbc6de7c2cf1bef791c6047a7d0b2e7ead459ad148d03a5fabe452dbb