Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c2ec82adae85dc…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 14:07:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4728dcdc8071a5d3baef7b8e98a38cd8 SHA-1: 316760a186607b5c6fe99ca9c531e7058e73b847 SHA-256: 95c2ec82adae85dccad5ba8c420a510017bd59d02e2246f108a11086e5de3ebb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and document body text that lure users with promises of free game currency and hacks. One of the primary links, http://netcdn.tw/app/431946152/how-to-get-free-robux-on-ipad-game-hack, is identified as a malicious redirector. The document's structure and content strongly suggest a phishing or scam attempt designed to lead users to potentially harmful websites.

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/431946152/how-to-get-free-robux-on-ipad-game-hack In PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-hack-version-download_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/all-minecraft-handbooks_GM479516143.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/roblox-hack-tool-2021-download_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/roblox-cheats-picture_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/how-to-get-free-gamepass-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/100-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/want-free-robux-copypasta_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/how-to-change-your-username-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/cute-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.mialhidayahkotamadiun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins_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_off00003167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3167 22328 bytes
SHA-256: 7a431e050542e83b16c933946bac4bc67b1f05fc723a680d59a3115702e6edfb
font_01_sfnt_off000062fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FE 19336 bytes
SHA-256: 6d1966dedbfa40cd6f3b86a0165a8efd1ff1225966bd53f71ae3281b1191d4bc

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