Malicious PDF — malware analysis report

Static analysis result for SHA-256 2579bee2422190e4…

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 05:35:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 0249f9304cf3b4730a0a3e2ccb1224bf SHA-1: e0542618459871e031db9811f7041b17a033590f SHA-256: 2579bee2422190e41e40c31a769dac138266a0a42cbecaf788946660e3bdbc71
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector domains, specifically advertising game hacks and cheats for popular games like Roblox. The heuristic firings indicate these links point to known malicious infrastructure, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the nature of the lures and the embedded URLs strongly suggest an intent to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/431946152/roblox-how-to-use-cheat-engine-2021-game-hack In PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/getrobux-info_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/oprewards-free-robux_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/coin-master-hack-apk-android_GM406889139.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-cheat-in-roblox-basewars_GM431946152.pdfIn PDF document text
    • http://petrorang.com/admin-panel/products/images/files/how-to-get-free-roblox-money_GM431946152.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
font_00_sfnt_off000034db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34DB 21936 bytes
SHA-256: f43c453bd7c89fa66cfc9f78cffcef41d5fb971864dd6016a0a6e6345f5afaba
font_01_sfnt_off0000653a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653A 19444 bytes
SHA-256: 283b78c097c829a9d52b40f51c619db8798bd1414019ebd9fa995b55e1b4a290

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