Malicious PDF — malware analysis report

Static analysis result for SHA-256 7865e336fad26b34…

MALICIOUS

PDF

66.2 KB Created: 2020-11-25 09:34:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: bb0f5a1c376de420a6980998afe00957 SHA-1: 85b25fec32c33a383cb07a480b736617a918ab74 SHA-256: 7865e336fad26b34775894015d99aac25e07674515ddd0ea616a42ba993f57fc
96 Risk Score

Malware Insights

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

The PDF document contains obfuscated text that appears to be a lure for an iPod. It also embeds a URL pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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
  • 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://trafffe.ru/123?utm_term=ipod+6th+generation+gold PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4385216/normal_5fb033c20441a.pdfIn PDF document text
    • https://zaderurumanig.weebly.com/uploads/1/3/4/5/134588260/ragusuf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451028/normal_5fada4e69618e.pdfIn PDF document text
    • https://wilufonikeku.weebly.com/uploads/1/3/4/8/134878677/piluwuravubifuxan.pdfIn PDF document text
    • https://bofezukidev.weebly.com/uploads/1/3/4/4/134464138/miwowi_jasaderapexas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376869/normal_5f8d7d2478c60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5f9a27d69c290.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388824/normal_5fa78c8003489.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8f5856aeef8.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/neviwove/38121319260.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66288502-3349-49cb-97df-28d5a9a6912c/8337035152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b304933f-c59a-449d-94ee-78cdf227c12f/90094295478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c442176-59e1-4abf-86ad-972e0c218a31/vabawurifusav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbe16962-edd3-4f51-99bf-552127425825/13695770040.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/gokitaw.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_off0000c679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC679 5136 bytes
SHA-256: 63010cd51b9ad5a8f0e186f07fd0652e3fc473b339f95d3884b9e5c380183c4d
font_01_sfnt_off0000d7e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7E9 10684 bytes
SHA-256: 1844c814a0801745028d7053c2a2c458ec6b513272eb1cf4d3bd92da1a273647