Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87455db7de8aa7e…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 11:24:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: f28bd071731f0f125f2a975695d2e5b1 SHA-1: 09b4802a40b94fa0872a7db0b5d4ececfbc332f3 SHA-256: f87455db7de8aa7e76d3e56e69d4d5bce2c6cddec8d6e8bc4f6b0c85d4b3edea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector, that lead to websites offering game hacks and generators. The document body and extracted URLs suggest a lure for users interested in obtaining in-game advantages, which is a common tactic for distributing malware or phishing for credentials. No scripts were extracted, but the presence of malicious redirectors and the lure indicate a high likelihood of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • 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.
  • 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 http://netcdn.tw/app/431946152/free-roblox-shirts-templates-game-hack In PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/do-roblox-read-hack-reports_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-synapse-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hacking-roblox-assain_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-rules_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/robloxs-got-talent-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/cheat-fr-roblox_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-generator-2021_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
font_00_sfnt_off00002b53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B53 22556 bytes
SHA-256: c6cb2359e9229400e82b6338b43ecc2b3ccc86b69d19780a955d0ebc722d8011
font_01_sfnt_off00005d8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8C 19476 bytes
SHA-256: e022dfdfaf5969877872bfc7bdb5743867beaa2f529a87f7ccf368eea5ea03d6

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