Malicious PDF — malware analysis report

Static analysis result for SHA-256 65b0de9e17cb1f2a…

MALICIOUS

PDF

35.6 KB Created: 2021-07-09 00:22:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8a45b86679911794dfb13b8c0bae9ed9 SHA-1: 2535295f3dcfc8cd164b2a7665f218ab5827f427 SHA-256: 65b0de9e17cb1f2ae69d66a467237549da2bd9ad8c152ba0bfa338178933df9e
180 Risk Score

Malware Insights

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

The PDF document contains multiple links to websites offering game hacks and cheats, including a known malicious redirector. The document body and embedded URLs suggest a lure for users seeking in-game advantages, which is a common tactic for distributing malware or conducting phishing. The presence of links to both a redirector and direct IP-based URLs indicates a multi-stage distribution effort.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.tw/app/406889139/how-to-coin-master-spin-hack-game-hack In PDF document text
    • http://110.232.83.89/slimsppks/repository/tuto-cheat-we-are-devs-roblox_GM431946152.pdfPDF link annotation
    • http://110.232.83.89/slimsppks/repository/dll-aimlock-hack-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/freespinandcoin-blogspot-com_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/minecraft-free-apk-download-016-0_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/get-free-roblox-easy-way_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-hack-on-computer_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/hexus-hack-roblox_GM431946152.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/get-free-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://110.232.83.89/slimsppks/repository/roblox-reddit-hacks_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_off0000341a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x341A 23192 bytes
SHA-256: 6cddc99080af97b95b098764e9d8e1d25ba72f1c9022fe5b56c4d2ab55073d52
font_01_sfnt_off00006868.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6868 18344 bytes
SHA-256: 1b45721854a26912eac4a4073874816a3bc474c99f5ea999af20f5b07fe9c6b8

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