Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd4c20251b30c73…

MALICIOUS

PDF

32.5 KB Created: 2021-06-26 02:15:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 975f333a7a48794da1a4b9b1c2f449a2 SHA-1: 4b20b2fedaacb802ddf812e5b6b6c160269aaa30 SHA-256: abd4c20251b30c730060b41c357e32afcf3fcd8d0fb1ebd4bd94eafab484e52f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to a known malicious domain, promising game hacks and free currency. The document body explicitly contains a call to action to access a 'Robux Generator', further supporting the lure. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/cheating-on-roblox-girlfriend-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/download-hacked-games-com-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-hack-tool-ios_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-tool-generator_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/wie-bekommt-man-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-everything-in-eletric-state-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/http-lazyassgamercom-robloxhackrobuxgenerator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-use-a-cheat-on-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
font_00_sfnt_off00002a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A34 21796 bytes
SHA-256: d1c4d1e810276437468afd11f1a0c0439748fb4f94ec694246aa62ff5ae13a6b
font_01_sfnt_off00005a5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A5B 19048 bytes
SHA-256: e9ee66d8c5cf1561e45c350bb6f95c7cbb51ad6f65fc792f43add20f7a250029

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