Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce3f131f940ad00…

MALICIOUS

PDF

35.8 KB Created: 2021-07-02 07:34:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: e140f9fb0456ca7536d0efb1ec868bc7 SHA-1: 09d7dfbbfc96ea685edcef2b495d8497d32e92cd SHA-256: 2ce3f131f940ad005a758a09d61e33b0a7a592ff54717590363c94c4f9a85192
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to websites offering game hacks and free in-game currency, which are common lures for malicious content. The heuristic firings indicate that these links lead to known malicious redirectors and that the document itself is likely malicious. The embedded URLs suggest a phishing or malware distribution attempt, likely initiated via a spearphishing attachment.

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/new-hack-for-roblox-deathrun-2021-game-hack In PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-32-android-mod-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-no-verify-human_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/coin-master-hack-2021-app-download_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/hack-in-roblox-jailbreak-speed_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/roblox-free-excutor_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-change-your-name-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://thamelinn.com/userfiles/files/fbchampion-com_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
font_00_sfnt_off0000308a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308A 23064 bytes
SHA-256: 5c045129f83d981c601d0df9a5f0996f7710e13da7d9136fc2b8b2f03f56c728
font_01_sfnt_off00006451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6451 19964 bytes
SHA-256: 70712b53aa197dbcc978d2eeb867043dfc46becd3fe84d4f7aff3dd51124f74e

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