Malicious PDF — malware analysis report

Static analysis result for SHA-256 af02a846598aee2c…

MALICIOUS

PDF

34.8 KB Created: 2021-06-29 08:10:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 932062a32a59caba6d126bb2de1f8f0e SHA-1: 789d7279167f01b5a648e72561f9867a40b4cdca SHA-256: af02a846598aee2c13f8b6e51480783874a41b722c23fce6e4819f887e6cd91c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a prominent external URI pointing to a download site, disguised with game-related lures. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of it serving as a dropper for further malicious content. No scripts were extracted, but the overall structure and content suggest a phishing or malware distribution attempt.

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.co/app/431946152/hack-para-roblox-facil-game-hack In PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/hacks-for-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/is-minecraft-free-on-nintendo-switch_GM479516143.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/dbz-final-stand-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/how-can-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/minecraft-hack-app_GM479516143.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/minecraft-dungeons-free-download_GM479516143.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/tuto-hack-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://pet.nfe.go.th/petnfe/userfiles/files/easy-robux-today_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_off000030d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D4 22512 bytes
SHA-256: cab9304b0fa4e0253d4fd0620804153286f0c7c10d860f228bd7f95113b819cf
font_01_sfnt_off0000631b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x631B 19092 bytes
SHA-256: b5bb1cd5fc10e19a4942369a6781b67561cc3a1f4b751c2b9ea7e0d2b5f0d16f

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