Malicious PDF — malware analysis report

Static analysis result for SHA-256 c84aee0f45a947c0…

MALICIOUS

PDF

68.1 KB Created: 2020-11-09 21:11:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8f69ef97c14d6e2c9c59ae838237b583 SHA-1: 22a4a8b26ffb27a199c231e1ba3949adaf97480c SHA-256: c84aee0f45a947c04b33ab5529139d7dd02a9463e364e747863b4851b2305424
176 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains heuristics indicating a payment redirection lure, suggesting a business email compromise attack. The embedded URL `https://traffking.ru/123?keyword=windows+change+password+cmd+line` likely serves as a landing page for this lure. While no scripts were explicitly extracted, the presence of `SE_LOLBIN_RUN_COMMAND` and `ML_NYX_PDF_MALICIOUS` firings, along with ClamAV detection, strongly indicates malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/123?keyword=windows+change+password+cmd+line PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4393755/normal_5f912b9e4bd21.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427287/normal_5fa8be75382c6.pdfIn macro / runtime command snippet
    • https://cdn-cms.f-static.net/uploads/4375342/normal_5f8977070a3c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382405/normal_5f9a596ab6933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454562/normal_5fa4f0633084d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446400/normal_5f9e226b5bcc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460057/normal_5fa86b0ed42db.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375694/normal_5f948c75151d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379987/normal_5f8bd71775190.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365567/normal_5f86f883ba679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385235/normal_5f9e4adcbd0ab.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/tetazino/thus_with_a_kiss_i_die_speaker.pdfIn PDF document text
    • https://s3.amazonaws.com/gajabedafot/wexojetedili.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fabf6ce-1834-4b22-8e04-c6b11dee347a/fipigiparonirofal.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

Related samples 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ccbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCBB 5592 bytes
SHA-256: 6436749b04c6f07acd74e540ffd31caea69d8fd5f601003b480efb91633e44c0
font_01_sfnt_off0000dfb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB1 10784 bytes
SHA-256: 00dded99a19b6724b3bc713d1f00a523eee70674168f7fddc0db8f9973f97078

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