Malicious PDF — malware analysis report

Static analysis result for SHA-256 82dfb696801c902c…

MALICIOUS

PDF

33.3 KB Created: 2021-06-23 07:55:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1df1879d5b4d500cab6811e7ee04017d SHA-1: c0b03198229ee365914f2a3fed36c513b561ec18 SHA-256: 82dfb696801c902c19578a7a95060af766bf04a2559e2f0a4177e4ace86e91d6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.co/app/431946152/roblox-free-downloadf-game-hack PDF link annotation
    • http://tah-li.com/images/roblox-animation-pack-free_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-tiktok-like_GM835599320.pdfIn PDF document text
    • http://tah-li.com/images/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/bucks-free-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/hack-para-romper-paredes-en-roblox_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://tah-li.com/images/free-cool-stuff-roblox_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/download-hack-roblox-jailbreak-money_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/roblox-bloxwood-hack_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/new-this-number-glich-gets-free-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/coin-master-time-hack-ios_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/if-roblox-was-not-free-part-2_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/how-to-get-robux-for-free-2021_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_off00002c43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C43 21924 bytes
SHA-256: a23878d0a4b9d4766dea19321652be96f8d31035f0d413d5a215ab7abbe64a74
font_01_sfnt_off00005c8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C8F 19156 bytes
SHA-256: 66f8a8937e3ce36460f0dd987ebcc87db2b20fdc1e8b6d3ddfd955b994bcb4bd

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