Malicious PDF — malware analysis report

Static analysis result for SHA-256 f094757a2cc1f120…

MALICIOUS

PDF

43.3 KB Created: 2021-05-16 20:18:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-14
MD5: d63e50b6abd82f5daf464f0ad9a58a27 SHA-1: 528872dffc95c72c782bf5cc50db0625d50fcb3a SHA-256: f094757a2cc1f120b40f89fa7752c9c62cb66cccb590cfe4a7efb5a6a70c3a4f
160 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically promoting 'free generator / game hack' lures. The document body and heuristics indicate a social engineering tactic to trick users into clicking these links. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/479516143/can-you-download-minecraft-for-free-game-hack In PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/rbx-hut-promo-codes_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/fbchampion_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://elearning.man1kotamobagu.sch.id/__statics/gudangsoal/files/minecraft-menu_GM479516143.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_off00004ce4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE4 26236 bytes
SHA-256: 735786e5241155e69f2f484cba7e87e3695c069e290310f68cb59e1ed83c8a12
font_01_sfnt_off0000861f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x861F 18592 bytes
SHA-256: ed5684d9a13e4aff878e16593a586bb1b0a035d61c002246dac68e4b539701c0

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