Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1c2bd49516ba265…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 15:47:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 36d83f135d34a9b90e8e1a683fded0a8 SHA-1: 70b7907f8a0c6f91b0166f408bd83dab5b397964 SHA-256: a1c2bd49516ba2652eed264c7e0f64deb39f97d3694d832b83bc5a514367faf0
160 Risk Score

Malware Insights

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

This PDF document contains multiple links to known malicious redirectors and sites offering game hacks or generators, such as http://netcdn.tw/app/406889139/coin-master-free-spin-and-coin-link-haktuts-hacking-news-game-hack. The document body and heuristics indicate a lure for free game items, which is a common social engineering tactic to drive users to malicious infrastructure. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest 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/coin-master-free-spin-and-coin-link-haktuts-hacking-news-game-hack In PDF document text
    • http://moneymaker-gold.de/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://moneymaker-gold.de/files/wwwroblox-hacks-for-robux-easy_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-hair-in-roblox-not-model_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-2021-april_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/best-free-spin-app-for-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/keybinds-v2-free-download-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/shredder-machine-roblox-free_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-robux-earn-points_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://moneymaker-gold.de/files/free-generator_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/is-roblox-being-hacked_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://moneymaker-gold.de/files/roblox-counter-blox-cheat_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_off000031ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31AB 23040 bytes
SHA-256: ae350f1f2cb90b559d795b47a19fbc937eefc2b5f1c8caf922e154b376991a94
font_01_sfnt_off0000652d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x652D 18824 bytes
SHA-256: 028a7533a0cffe48b6a3e73a5ec4a7571f128d14e74948211d37bb39bd0384d4