Malicious PDF — malware analysis report

Static analysis result for SHA-256 d94b847208456ee5…

MALICIOUS

PDF

39.1 KB Created: 2021-05-21 16:15:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ae3fbad6d0449c9919512afc82b55210 SHA-1: 2f19fd9c3b5757289e85b70b6368233f327b8d5b SHA-256: d94b847208456ee5aa41645a28cf1bb558711082292a7ad189426453e2f0530e
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 0.8060

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/479516143/how-to-get-minecraft-java-edition-for-free-game-hack PDF link annotation
    • http://stroybelan.ru/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://stroybelan.ru/images/coin-master-link-daily-get-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://stroybelan.ru/images/coin-master-facebook-free-spins_GM406889139.pdfIn PDF document text
    • http://stroybelan.ru/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://stroybelan.ru/images/minecraft-xbox-one-code-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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000034f2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x34F2 24532 bytes
SHA-256: f18faa850d818b023adfa8e3457e3f158129a739faeaa0f20b98122a95bf62be
font_01_sfnt_off00006d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D03 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off00007712.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7712 18328 bytes
SHA-256: a790f51109e75a7469d42ca78e2bb2ee6ca1fa0985c1c579ea7802a52011e373

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