Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6096ced3359ab8f…

MALICIOUS

PDF

45.1 KB Created: 2021-04-23 18:03:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: f0a401f94bc7d55d256fbf0a92711a52 SHA-1: c52206ef148cfc86121f7fd876ce418a369b35ec SHA-256: c6096ced3359ab8f3b53e8354c7466b4758f8e6de2cc09302891c2305b9ec2e0
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses brand-impersonation credential phishing. 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 0.9858

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netsecure.top/app/431946152/como-tener-robux-con-cheat-engine-2021-game-hack.
  • 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://netsecure.top/app/431946152/como-tener-robux-con-cheat-engine-2021-game-hack PDF link annotation
    • http://bwharrisalumniusa.org/images/roblox-free-robux-no-real-money-2021-tablet.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/free-robux-20219.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/can-you-use-cheat-engine-on-roblox-to-get-robux.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/roblox-4all-cool-hack-robux.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/how-to-get-free-robux-on-roblox-ipad-2021.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/does-account-stealing-hack-roblox-work.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/how-to-get-cheats-in-roblox-jailbreak.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/ccv3-cheats-for-roblox.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/free-robux-games.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/roblox-all-free-items-2021.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004349.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4349 26956 bytes
SHA-256: c31409b4fe671be7a418e4e216d1da5685d63c02f4a03a0413fd9f7ab561eceb
font_01_sfnt_off00007f8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8A 3312 bytes
SHA-256: 40bd8eebcb3a0d68a8646f1930e84f30a44bfa48525263c6c528f0bc1e9c1677
font_02_sfnt_off00008ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD9 19416 bytes
SHA-256: ceda3c0906d9088daa5ea034bb530503d225733d3ea904a1df7dc17c993b0ba9

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