Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7481c45ff5d8ac6…

MALICIOUS

PDF

37.3 KB Created: 2021-05-21 22:45:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c46cee5a8a3fb3078c43cd32077fcb13 SHA-1: 78689a153429f1975def5bcd1b048080b4699d74 SHA-256: f7481c45ff5d8ac65301b5d46af5679b63d0271b047ce2514f7455e8974069df
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1071.001 Web Protocols

This PDF document contains multiple links designed to lure users into clicking on what appears to be a free game hack generator. The primary link redirects to a malicious site that impersonates Microsoft, likely to harvest credentials. The document body contains obfuscated text and multiple URLs, suggesting it is part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/479516143/minecraft-multiplayer-free-game-hack.
  • 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/479516143/minecraft-multiplayer-free-game-hack In PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://trustindoutama.com/assets/CKImages/files/robux-generator-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000036a4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x36A4 25736 bytes
SHA-256: 4449365f72370564837887d6df759e9870dbd2c2bcf0db05b77bc4d5a1c4bc3a
font_01_sfnt_off0000712a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x712A 18136 bytes
SHA-256: 22c65de64af2721f6fc37241b86838ece151de043079d0e804f5da14bd34918b

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