Malicious PDF — malware analysis report

Static analysis result for SHA-256 02f5fd269ca4c118…

MALICIOUS

PDF

36.1 KB Created: 2021-07-03 13:58:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 694b096f5c920328e760cc47470733ba SHA-1: 4ace2daed00ad1bd19cef54936493c261046be77 SHA-256: 02f5fd269ca4c118885f1bde344c836ca79306752eb9f8f26964c64a0ab3ac88
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous links to websites offering game hacks and cheats, such as 'how-to-get-free-pet-food-in-coin-master-game-hack'. This indicates a lure-based attack pattern, likely designed to redirect users to malicious sites or trick them into downloading further malware. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/how-to-get-free-pet-food-in-coin-master-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-cods-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-robux-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-catalog-items-for-free-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-know-if-a-roblox-hack-has-a-virus_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-2021-easy-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/veil-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-roblox-with-inspect-element-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-car-simulator-hack_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-a-roblox-account-easy-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/lua-script-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hacking-scripts-to-hack-roblox-gamemodes_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-t-shirts-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-money-on-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-a-free-boombox-on-roblox-high-school_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-fortnite-game_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003443.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3443 23740 bytes
SHA-256: fb5e7e3f7de28317499df3ecf060f4752aa27ce98f3da2778315664447e4121f
font_01_sfnt_off00006a02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A02 18492 bytes
SHA-256: 3b8d0933b66d4a3ba90188940e5d7ed21cf944b8acae8725630a3c3be9b63f2c

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