Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae21298e0b26e915…

MALICIOUS

PDF

35.0 KB Created: 2021-06-27 23:09:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 26777b17dc8d854918c1aa81f15d0076 SHA-1: 8a32ce27375f429077cbfdbb17f4934dac901bc1 SHA-256: ae21298e0b26e915b0030217d912851f62f14614db1e9fc0d7779c0428308c50
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and accounts to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts further malicious PDF files. The document's content and embedded URLs strongly suggest a phishing or scamming attempt, likely leading to further malware downloads or credential harvesting.

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/free-accounts-on-roblox-with-robux-2021-game-hack In PDF document text
    • http://cintabaca.org/katalog//repository/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/pokemon-go-free-fire_GM1094591345.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/what-is-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-pocket-edition-hack_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-de-roblox-counter-blox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/free-robux-youtube-live_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/how-to-cheat-on-songify-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/roblox-rape_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/tiktok-free-view-like-video_GM835599320.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/cheat-engain-mac-for-roblox_GM431946152.pdfIn PDF document text
    • http://cintabaca.org/katalog//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://cintabaca.org/katalog/repository/hack-roblox-in-game_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_off00002f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F82 22508 bytes
SHA-256: cd8c65c9da81d7c8dbe3415bfc54ed64885243a72f1205dada2f08c3500bdf3d
font_01_sfnt_off000061ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61AC 19780 bytes
SHA-256: 327d5044e673d88269afea44f6d29c39f68598a1b082cd2753fedb2dd9a5ae57

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