Malicious PDF — malware analysis report

Static analysis result for SHA-256 308259c3876afa83…

MALICIOUS

PDF

74.6 KB Created: 2020-12-15 04:57:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 660b255afa90af13d617bcd9a9220774 SHA-1: f8008dafa314169207f6c1e2ad52d5d44dacf72c SHA-256: 308259c3876afa838bb3ffe2c7053c4ed8027c6e26660bd534d7b4fd8b9fec7c
202 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=activate+windows+7+cracked'. This URL is also listed as an embedded URL. The document body, though heavily obfuscated, contains text fragments that suggest a lure related to activating Windows, which aligns with phishing tactics. The presence of a clipboard command execution lure heuristic further supports the idea that the user is being prompted to interact with the system in a way that could lead to compromise.

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
  • 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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gettraff.ru/123?utm_term=activate+windows+7+cracked In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369655/normal_5f8cc680a8927.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382194/normal_5fb4acae35a8f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387243/normal_5fd160db2e49e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500447/normal_5fb9aef54c234.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388407/normal_5f94a627cb819.pdfIn PDF document text
    • https://zazejisodixad.weebly.com/uploads/1/3/4/3/134359446/4058655.pdfIn PDF document text
    • https://sudogela.weebly.com/uploads/1/3/4/8/134846286/3545074.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/kavitokolezub/basolazatofaxeras.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/chromium_old_version_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4a3a13d-861a-4d31-82c4-373e32088adf/28786448677.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdaa81bb-7c3e-4f5e-9f26-c1e4d6c87727/fadedafidawefuxapovafexo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6fa3731-fbed-4c55-af5d-1342c5301c40/fopebapukuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ca03d2-7615-432e-8a6e-d378d9fcd150/49669848384.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/mefupiromuvut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53fe9727-3dd3-4663-9341-1a39537d179e/xowuzenatozefojus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cad4b82-855b-45ec-99b1-5b03e1c688f1/le_malentendu_dalbert_camus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d69bcf5-f8a9-437d-b7ac-b39b874d93cb/85575185722.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/kimaxepexabuvapuvati.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_off0000e5f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F3 5184 bytes
SHA-256: 48018e6a4c75a2365e3f9f73b358a8a9eb7c77c1acfd7648b95ad66b8b81ea52
font_01_sfnt_off0000f7cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7CC 11132 bytes
SHA-256: 6b662ed659af5751a129938a83f4bcbb3a6c931ff7dcac67578ffdaabaee8209

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