Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6edd937fc7936fa…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 09:08:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 230b2e47d2541257e3eae676cfbbd8d6 SHA-1: b43c7c1902ee25328cb33eb8411fe98c669430b5 SHA-256: a6edd937fc7936fa2d1e92bd63e52a81f47143b226959b4b04424688a564fece
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and generators to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/free-bugatti-jailbreak-roblox-game-hack, are associated with known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this document is designed for user exploitation.

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-bugatti-jailbreak-roblox-game-hack In PDF document text
    • http://elibrary.perludem.org/repository/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-robux-free-easy_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/wurst-115_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-free-spins-without-verification_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-make-a-group-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/cool-hacker-names-for-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-assassin-free-knives_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/hack-de-roblox-jailbreak-descargar_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-hack-link_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-admin-in-roblox_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/coin-master-hack-download-android_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-today-2021_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-rewards_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
stream_002_off00002d2a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2D2A 22932 bytes
SHA-256: 1770e5f584cb37bc5f0fd33676a9341bf3d2086aeefd87f467861e4eeb94801c
font_01_sfnt_off000060bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60BF 19348 bytes
SHA-256: d47edf913ac2ebed43f438c0f58c4b5bdc5fb7c4b0f2239ef8c5b8a063d25820

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