Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c9abaa3482182d…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 15:04:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d8f08e50d263159d39873937c08a4b42 SHA-1: 538012f13add11525874c33fba289a991fa9302d SHA-256: 08c9abaa3482182d9a354a1a7ccf604cfab028322e7178e4e796fb39392dfd05
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one identified as a malicious redirector pointing to 'free-roblox-money-game-hack'. The document body, though partially corrupted, also contains this URL, suggesting a lure for users interested in game-related cheats or generators. The presence of multiple similar PDF filenames on the 'porthos.it' domain further supports a campaign distributing such lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.xyz/app/431946152/free-roblox-money-game-hack In PDF document text
    • https://www.porthos.it/images/blox-rewards_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/robux-2021_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • https://www.porthos.it/images/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/rape-simulator_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.porthos.it/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://www.porthos.it/images/card-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • https://www.porthos.it/images/how-to-get-free-robux-as-a-kid_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_003_off000048a1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48A1 26912 bytes
SHA-256: 162803b3b6490934630c3c740a60b947d37fcc8c8a975259350b391f918b6abe
font_01_sfnt_off000085b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85B8 18324 bytes
SHA-256: 592c86f68d7cfce1f91e7ace661462f05e7807c87c96d21e42ea748452481f78

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