Malicious PDF — malware analysis report

Static analysis result for SHA-256 78492fa5b8d58501…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 02:11:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e1e845b37de63f35288339e3bfe834d9 SHA-1: 8983ba484e501efa0393afb64d3ee9281d55178e SHA-256: 78492fa5b8d585012c839fb177a71a816c68d4e7dfc000fe3cec292e53a3175b
82 Risk Score

Malware Insights

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

The PDF document contains a lure for game hacks and free currency, directing users to a malicious URL. The ML classifier strongly indicates maliciousness, and the presence of numerous game-related hack links reinforces the social engineering aspect. The primary IOC is the redirector URL which likely serves further malicious content.

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.tw/app/406889139/how-to-get-free-shields-on-coin-master-game-hack PDF link annotation
    • https://mountainholidaytreks.com/userfiles/files/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/pokemon-go-free-quest_GM1094591345.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-duplicate-coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/roblox-hack-robux-infinito-download-pc_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/robux-withdraw_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/how-to-hack-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/rbx-com_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/game-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/best-free-horror-game-roblox_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/irobux-com-redeem_GM431946152.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://mountainholidaytreks.com/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.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
stream_002_off00002f21.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F21 22832 bytes
SHA-256: 59ee517894296dac42d502730bbcc2fe7ecf893c7e970d939699fba115ed9eed
font_01_sfnt_off00006295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6295 18576 bytes
SHA-256: bafb54b008408335a6cbf31f947a9ae1c512e34b5a36ee22a21ea4e663dc1f71

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