Malicious PDF — malware analysis report

Static analysis result for SHA-256 04e3335aa2d7c677…

MALICIOUS

PDF

34.0 KB Created: 2021-06-26 01:50:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 81faa355f4818f38a1e2587010b3519c SHA-1: 7a9f0f4e6ebc83e5d27b42baed638bdda48b8b8e SHA-256: 04e3335aa2d7c677926ab6f9165bfe8b98af4e36da12f2e0e3fc0ebeca02d9c9
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and sites offering game hacks and cheats, such as 'roblox-hack-sahrbite-game-hack'. These links are designed to lure users into downloading potentially unwanted or malicious software. The ML classifier also strongly indicated maliciousness.

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-hack-sahrbite-game-hack In PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/how-to-hack-treadmills-roblox-heigth-lifting-sim_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-robux-hack-generator-club-no-verification_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/coin-master-game-hacking-tricks_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/hack-me-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/i-got-free-robux-from-this_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/sites-for-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/minecraft-hacks-115-2_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmbpj.com/opac/repository/coin-master-ultra-attack-hack_GM406889139.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/cookies-to-buy-robux-free_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-robux-just-with-email_GM431946152.pdfIn PDF document text
    • http://pspmrsmbpj.com/opac/repository/free-minecraft-account-list_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_off00002f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F49 21996 bytes
SHA-256: 8b8b513de2f7dd5eeeaabddf8f65cb10baf51375078c3b751d5802145efd945e
font_01_sfnt_off00005fe5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE5 19044 bytes
SHA-256: a83ba2f0579a68a998d95dc7c48b92d1ac6e3b3ec691ee6da03ec96e634a2c6b

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