Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0405ce0a8762b0…

MALICIOUS

PDF

45.6 KB Created: 2021-06-07 04:13:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 52fbbc325bbf9682886948b943627ded SHA-1: 353c4d6847f615cf527229b24dfa169b10842db2 SHA-256: 2b0405ce0a8762b07418f576aecb07340bc072f9211a94897f782559d97510a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure for game-related cheats and currency, directing users to a known malicious redirector. The document body and heuristics indicate a clear intent to trick users into visiting malicious URLs, likely for financial gain or to deliver further malware. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.tw/app/431946152/roblox-hack-free-robux-2021-game-hack In PDF document text
    • http://vedrachemicals.ro/images/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • http://vedrachemicals.ro/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/spin-link-coin-master_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/how-to-download-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://vedrachemicals.ro/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://vedrachemicals.ro/images/cheats-coin-master-free_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://vedrachemicals.ro/images/free-roblox-code-items-2021_GM431946152.pdfIn PDF document text
    • http://vedrachemicals.ro/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://vedrachemicals.ro/images/minecraft-free-download-chromebook_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000513b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x513B 26088 bytes
SHA-256: 531ed15acaf30b6f1b9a4d4fa42086fe009b4dd5c6811cd7cac3ac53724f2075
font_01_sfnt_off00008dd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DD2 18888 bytes
SHA-256: 38ea5888834795b9063e4daafafd8f065123f7fe99f19df17880a964d569b40f

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