Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98649c853a3b2dc…

MALICIOUS

PDF

33.2 KB Created: 2021-06-19 02:29:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 9f26487cc00b175a89a23610107cc7d8 SHA-1: 96119a3eee1a270363d19c53d26d4a6807df2534 SHA-256: c98649c853a3b2dc52c59575848f064d0d61ec7f00e453060ab3338cb5b52069
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically advertising game hacks and generators. The document body reinforces this by mentioning 'Roblox Username For Free' and 'Robux Generator', indicating a social engineering lure to trick users into visiting these sites. The presence of embedded URLs and the ML classifier's high confidence score support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/how-to-change-your-roblox-username-for-free-2021-game-hack In PDF document text
    • http://slim.sisminkada.net/repository/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-cheat-source-leaked_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-modeler_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/how-to-get-free-car-in-firestone-roblox_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/roblox-free-boombox-games_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/minecraft-ps4-free_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://slim.sisminkada.net/repository/blogspot-coin-master-free-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_off00002a73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A73 21780 bytes
SHA-256: 2ac6cc013a2eece9108a802134365e7efaaed8219aa198e75b823a1853fd802e
font_01_sfnt_off00005a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A81 19944 bytes
SHA-256: 58d5e835659902526c12094ddffc5710f83fbe2825a8f92a51b056a6b9134250

Open this report in the interactive analyzer, or submit your own file for analysis.