Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b3f94905a3e8e3…

MALICIOUS

PDF

33.6 KB Created: 2021-06-29 00:44:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 6874196acefa749f646f365ba407ba5e SHA-1: 4947be765f2d53b7639e9d03822958d5d3521a45 SHA-256: 07b3f94905a3e8e30a213320bdba7a4568de82265f77ab645d04fb376248b803
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector infrastructure, disguised as game hacks and free item generators. The primary lure URL is http://netcdn.co/app/431946152/cheat-for-guessing-anime-roblox-game-hack, which is designed to trick users into clicking through to potentially malicious sites. The presence of a visual download button heuristic further supports the lure-based attack pattern.

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/cheat-for-guessing-anime-roblox-game-hack In PDF document text
    • http://lib.untad.ac.id//repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/cerberus-roblox-exploit-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-hair-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/youtube-como-ser-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/robux-hack-tool-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/best-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-onto-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-add-robux-to-usesed-roblox-card-cheat_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-hack-weight-lifting-simulator-2-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-roblox-robux-generator-code_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-no-buying-armanda_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-hack-tool-apk_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-doge-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/can-you-make-a-minecraft-server-for-free_GM479516143.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_off00002c94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C94 22064 bytes
SHA-256: eb93827bafdc2f805066f727957d0b17d8fc595259cf8854ff10fde459237d15
font_01_sfnt_off00005d36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D36 19440 bytes
SHA-256: 051c8b9fc142b8c3ce53f3d581bb1f8b26e0d97550a3b21ee71b0543d95b2c69

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