Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b6993ea3173285…

MALICIOUS

PDF

34.2 KB Created: 2021-07-05 15:15:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4005e2ec1f38adf32693073b7c89ed38 SHA-1: 77daccdb29ae65f1a420e5332b42bab95242c132 SHA-256: a0b6993ea317328508ae6ef1edfb8bd5cd40a1baadff406125cb45c2df8128cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, masquerading as game hacks and cheats. The primary lure, 'coin-master-pet-food-free-game-hack', redirects to infrastructure associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely to download further malware or engage in phishing.

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-pet-food-free-game-hack In PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/hacks-roblox-phantom-forces_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-play-games-and-add-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-tuxedo-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-knife-script-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/hack-robux-cheats_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/hacker-simulator-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/how-to-kick-someone-on-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-android_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/can-you-get-banned-for-cheating-on-private-server-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/cheats-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkklawang.com/opac/repository/pastebin-hack-robux-fast_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_002_off0000303f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x303F 22680 bytes
SHA-256: 87689fce2fa9f21913ba7fb7bdd13efe1db0e304589e6d6c8157543c10753b67
font_01_sfnt_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 18324 bytes
SHA-256: 7f898f087de0c63ea34c3b0a8cd26138396bb89e1104774aa80067c589943042

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