Malicious PDF — malware analysis report

Static analysis result for SHA-256 2351d5ddb8290748…

MALICIOUS

PDF

36.3 KB Created: 2021-05-15 23:04:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 47de6d59c62c9f3b571539d42ebb2dfb SHA-1: 0a9a21149f51e80991dc06634b6cb3bd0d9349d0 SHA-256: 2351d5ddb829074822ee3f17d548c340bd244fd389beb4c5485a0b371d6022ba
170 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links that redirect to known malicious infrastructure, specifically a "free generator / game hack" lure. This pattern is indicative of a phishing or scam attempt, often used to deliver further malware or steal credentials. The presence of a payment redirection lure heuristic further supports a financial scam motive.

Machine Learning

  • Nyx PDF Classifier clean score 0.0303

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • 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
  • 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
  • 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://netcdn.xyz/app/431946152/real-robux-codes-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 4

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
stream_003_off00003321.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3321 24720 bytes
SHA-256: f5162268e50c6dec66a4127e8e916a78e886058b86495250b7e3b8de8df83a75
font_01_sfnt_off00006c19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C19 18324 bytes
SHA-256: c4f7742aedc28b29f193bf98a15545964ca2d90d022e69fc2fcba8726d0ec952

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