Malicious PDF — malware analysis report

Static analysis result for SHA-256 da255f7b53766d6e…

MALICIOUS

PDF

35.8 KB Created: 2021-06-22 03:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 52dab224df705c522387211da7205cf0 SHA-1: edbb40301beb09203296032b5a99ea6061f2f455 SHA-256: da255f7b53766d6ef400603f619c00c8d6804b0c4e52f38cf900de3bc3de3cf5
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged by multiple heuristics as malicious, including an ML classifier. It contains a large number of embedded links, many of which are SEO-optimized and point to game hacks and cheats, suggesting a link farm or phishing attempt. The presence of a 'download button' lure further supports this. The document's primary purpose appears to be directing users to external sites that likely host malware or facilitate scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/406889139/coin-master-hack-no-survey-or-verification-game-hack
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-apk-hack_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-spin-coin-master-link-today_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-spin-hack-coin-master-2021_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-coin-master-gifts_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/roblox-hacks-and-cheats_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-hack-with-facebook-login_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-roblox-boy-hair-not-a-model_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/how-to-get-free-pet-food-in-coin-master_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/roblox-play-as-guest-free_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-daily-free-link_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/free-tiktok-followers-no-human-verification_GM835599320.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/minecraft-texture-packs-free-download_GM479516143.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-free-coins-spins_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-tiradas-gratis-2021_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/hack-para-elemental-battlegrounds-roblox_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/coin-master-hack-activegamer_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/hack-coin-master-using-cheat-engine_GM406889139.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_GM431946152.pdf
    • http://e-learning.mialislamiyahckp.sch.id/__statics/gudangsoal/files/minecraft-free-download-pc_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003452.bin
c8f3ecc5c29008805dd64a4f8c9e522733df5cb832955648e8f9730592653d12		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3452 23128 bytes
font_01_sfnt_off00006855.bin
3714ff820157558559e7d0653201827560acd429746c0784f855fbf1e368d380		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6855 18572 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.