Malicious PDF — malware analysis report

Static analysis result for SHA-256 c352ae50e9c7ab96…

MALICIOUS

PDF

23.4 KB Created: 2021-06-28 09:20:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 38695882147f3576872592839508b73f SHA-1: 2ad5effe9161ea06c9bdbe099b6f3b1d3a0672cd SHA-256: c352ae50e9c7ab961f94512fd7ba32123989eb82cd18d715f8607030107c2adc
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and potentially malicious sites, disguised as game hacks and free generators. The heuristic firings indicate the document is designed to redirect users to known malicious infrastructure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to lead the user to a malicious payload or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

Heuristics 3

  • 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.
  • 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/battle-of-titans-roblox-hack-game-hack In PDF document text
    • https://shjbottle.com/upload/files/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/minecraft-windows-10-free-code_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-o-use-cheat-engine-in-roblox-tycoon_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-spin-best-link_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/pubg-uc-shop-qatar_GM1330123889.pdfIn PDF document text
    • https://shjbottle.com/upload/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-its-not-free_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/hacked-pants-roblox_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/roblox-i-cheated-for-this-box_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/admin-roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/get-free-robux-today_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/get-robux_GM431946152.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-items_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/coin-master-free-spins-link-whatsapp-group_GM406889139.pdfIn PDF document text
    • https://shjbottle.com/upload/files/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://shjbottle.com/upload/files/fbchampion-com_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002ec5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2EC5 23012 bytes
SHA-256: cdcbaa9bab991c5e92b5f2e23d6a8205309f59459f823d8803287a2073ddb45f