Malicious PDF — malware analysis report

Static analysis result for SHA-256 e409ef4189645a2c…

MALICIOUS

PDF

34.4 KB Created: 2021-07-06 00:29:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: c3571f11c5538c25ff3e3ea760629b76 SHA-1: 5b4e55bd05f6fba38ff14dda9732b19426b441ab SHA-256: e409ef4189645a2cdae9dc2ba258f15b7c973a140d4a57125f49c511febba069
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including one identified as a malicious redirector. The document body and heuristics indicate a lure for free game hacks or in-game currency, designed to trick users into clicking the malicious links. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or scam 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/479516143/how-to-get-minecraft-bedrock-edition-for-free-game-hack In PDF document text
    • http://gts.edu.gh/library/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-games-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-a-free-remote-raid-pass_GM1094591345.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-coins_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/krnl-roblox_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/code-de-cheat-roblox-simulator-de-chiens_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/forum-hack-roblox-fr_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/best-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/cool-roblox-outfits-free_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-exploits-hacks-arsenal_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-trial_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-hack-on-roblox-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spin-coin-master-instagram_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_off000030e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E9 22460 bytes
SHA-256: c76e613fc456e80bb79887d722c7e6aa5ff237b856dfc12d6bfe0cb88d00477d
font_01_sfnt_off000062ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AC 18720 bytes
SHA-256: 8749f690aacce1ff2d40288e6cd65b377fcb09a0c55c4616b39fbcf3e372c4de

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