Malicious PDF — malware analysis report

Static analysis result for SHA-256 fac2a3b181d0eef7…

MALICIOUS

PDF

44.5 KB Created: 2021-06-10 19:07:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 18d2f07d879c02594dfe96630037f912 SHA-1: 76301c35813cc973a8704bce5b6ef5025d708c46 SHA-256: fac2a3b181d0eef7a89d87aa08e481e45c601f8b6326abc30d00c41e1385f349
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to known malicious redirector infrastructure, specifically promoting game hacks and generators. The ML classifier also flagged this PDF as malicious. The document body and embedded URLs suggest a social engineering lure to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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 https://netcdn.tw/app/431946152/iron-man-simulator-roblox-war-machines-hack-lua-c-script-game-hack In PDF document text
    • http://dana1157.com/images/combo-free-roblox-site-v3rmillionnet_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-welcome-to-roblox-building-hack_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-weird_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/i-cant-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/adopt-me-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/robux-offer-wall_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/roblox-wizard-life-galleons-hacks_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-spin-coin-master-apk_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/is-minecraft-free-on-computer_GM479516143.pdfIn PDF document text
    • http://dana1157.com/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://dana1157.com/images/robux-redeem_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/smurf-backpack-gives-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-generator-com-oprewards_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://dana1157.com/images/rblx-gg-free-robux_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
stream_004_off00004d6f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D6F 25036 bytes
SHA-256: 6204230f07c89895b4ce5f6409acf9ab7522f48d8446954e7a78debbe392d61d
font_01_sfnt_off00008797.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8797 19544 bytes
SHA-256: e9f269416fe1f2839dcf8533febbd0f8ff853cbd5adbf4042b82f1c6a8fedef2

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