Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f56179c526ec10c…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 20:14:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ffa7dcc5ea49e711b1c87e614977ca20 SHA-1: 641c2dc12983d26d7b53563d743179a7d16bd41e SHA-256: 7f56179c526ec10cad2a71cb7d62c1393d7bcd31d04cb3f4cf3474fe07fdb014
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically advertising game hacks and free currency. The document body and embedded URLs strongly suggest a lure for users seeking in-game advantages, which is a common tactic for phishing or malware distribution. While no scripts were explicitly extracted, the nature of the links and the heuristic firings indicate a high likelihood of the document attempting to redirect users to malicious infrastructure.

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-heaven-free-spins-today-game-hack In PDF document text
    • http://lib.kesdammedan.ac.id/repository/hack-to-train-railway-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/bloxwin-robux-free_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-get-minecraft-for-free-on-android-device_GM479516143.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-free-spins-glitch_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/zeus-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/download-a-free-generator-for-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-free-body-block_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/how-to-hack-sharkbite-roblox_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id/repository/roblox-life-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kesdammedan.ac.id//repository/roblox-hacks-com_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_off00003036.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3036 22296 bytes
SHA-256: d21cc73022e4959df8117f02d3683f37a6088341367c4067f8cc66f14bb670b0
font_01_sfnt_off000061dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61DC 18640 bytes
SHA-256: 3d9153b17c01349321dbf9895197e00a389ef43fe3f4ac06fe2a253dcac379fc

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