Malicious PDF — malware analysis report

Static analysis result for SHA-256 2889c7cd8298c2da…

MALICIOUS

PDF

33.0 KB Created: 2021-07-06 19:42:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: aca85169c7fded6b9dcb9e36f709d862 SHA-1: 20ad54688e1b9bd23aceba60818736b52fbb98b8 SHA-256: 2889c7cd8298c2dae3635499c42b944310a4b3e3f95dc2c7d4693c9bc8e38ade
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector, disguised as a generator for game hacks. The ML classifier also flagged this PDF with high confidence. The primary lure appears to be a 'free generator / game hack' for Minecraft, which is a common social engineering tactic to trick users into visiting malicious sites.

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/toolbox-for-minecraft-pe-game-hack In PDF document text
    • https://www.tena-g.hr/files/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-robux-card-codes_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-robux-onroblox-and-pastebin_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-yellow-roblox-girl-hair_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-godly-roblox-mm2-new_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
    • https://www.tena-g.hr/files/roblox-com-redeem_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/rs-free-robux_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/medikit-free-robux_GM431946152.pdfIn PDF document text
    • https://tena-g.hr/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/hack-de-allahu-akbar-roblox-download_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/how-to-get-free-robux-fast-and-easy-2_GM431946152.pdfIn PDF document text
    • https://www.tena-g.hr/files/free-promo-codes-for-roblox-2021_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_off00002c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C34 22268 bytes
SHA-256: 960b92adf5edb3e94c1c37393e98f187b036cb17bdae0bf85d55c1bfdfb884ba
font_01_sfnt_off00005d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D71 18592 bytes
SHA-256: f32c1ca8168d27304aec22942809e8223fb1c64027b7ede4107c71745ae71c26