Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0bb985c0cc14073…

MALICIOUS

PDF

42.1 KB Created: 2021-05-19 00:33:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1e90db026a7c18e8188c731fa785db40 SHA-1: c48afe4fc44a80d0fde428702ebbcb6d4920564f SHA-256: a0bb985c0cc1407346e92c26a8629e59a1b9cbade13b4f5421eed627ae64a704
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 0.9971

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 https://netcdn.xyz/app/406889139/free-pet-treats-coin-master-game-hack PDF link annotation
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/best-site-for-free-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-minecraft-skins-girl_GM479516143.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/how-to-get-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://katalog.gemalibrary.net/repository/is-minecraft-education-edition-free_GM479516143.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_003_off00004a4a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4A 25308 bytes
SHA-256: bc8ddcfa6a58c2ba4e330eeafed7b90b9973181b3dea7319771c3c22930e7cb4
font_01_sfnt_off00008396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8396 17864 bytes
SHA-256: 276a5511e926ade4da3bb644615f667fa3bbb56bd99d2adc923a65479c9a9e34

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