Malicious PDF — malware analysis report

Static analysis result for SHA-256 f13bad6f963ea05f…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 22:44:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: a801a4a76d14a89db59f14e1a4df2374 SHA-1: 3613651466ef24212cbbe31ac6f7048b9865af4d SHA-256: f13bad6f963ea05f65a7ebe2ee27614c88b04c84669f1c8edd1875690dfeac35
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free spins to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or downloads. No scripts were extracted, but the document's structure and embedded URLs strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/406889139/cheats-coin-master-free-spins-and-news-game-hack In PDF document text
    • http://katalog.stikesmukla.ac.id/repository/pokemon-go-hack-version-free-download_GM1094591345.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-script-adopt-and-raise-a-cute-baby-free-admin_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/vikinglaw-hack-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-roblox-songs-mp3_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/we-are-devs-hacks-guest-world-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/cheat-roblox-jvc_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-all-free-packages_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-free-robux-online-generator_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/hack-roblox-robux-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-hack-roblox-to-get-builders-club_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-a-free-game-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://katalog.stikesmukla.ac.id/repository/how-to-o-get-free-coin-master-spins_GM406889139.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_off000030d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D2 23244 bytes
SHA-256: 00201b263a850fc985f8294ac2f855ee2a7fdd6dd9b24b1a8ad7c3ac9a3e5b87
font_01_sfnt_off0000654b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654B 18676 bytes
SHA-256: 187c53b06c05787095bdfe0dcf94dd4e1b2ba58c8389f47ea6da0d26e0945549

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