Malicious PDF — malware analysis report

Static analysis result for SHA-256 d215c551f72a9da9…

MALICIOUS

PDF

44.8 KB Created: 2021-05-11 13:04:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 96414dbd48246cca5ef5f92ff41371f9 SHA-1: ad0e7d1ec9430b750304135cff86c428718ee7ef SHA-256: d215c551f72a9da9af303ebd483ec558937ddaf1505342237fd1b4554c58dc73
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free game currency or hacks, directing users to a malicious URL. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially malicious content or downloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/431946152/freerobuxhack-us-game-hack PDF link annotation
    • http://ff-obertraun.at/images/wurst-client-18-9_GM479516143.pdfIn PDF document text
    • http://ff-obertraun.at/images/latest-free-spin-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://ff-obertraun.at/images/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/robux-codes_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/get-roebucks-com_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://ff-obertraun.at/images/public-enemy-sun-prairie-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ff-obertraun.at/images/easy-robux-hack_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004760.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4760 25008 bytes
SHA-256: 7f179d82b49a07c9f010f229217ba5147ddbd219b613563fb9b07ee00d5b4d2c
font_01_sfnt_off00008144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8144 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00008b02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B02 18764 bytes
SHA-256: eb8464b7a0addd56b603953feb3e29196181109f3d6ed00b0f5bffeafad9fb96

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