Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e8dfabb99305eba…

MALICIOUS

PDF

34.0 KB Created: 2021-06-25 14:13:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b438174d1ee267fcfbf0ff8a7a0e3d9a SHA-1: 1265acada865a892522a3de0ea839e832649e29a SHA-256: 3e8dfabb99305ebaa6c6522bfa756ab9546d0a2321111fc97dca45f0a9aeb83f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and heuristics indicate a lure designed to trick users into clicking these links, likely leading to further malware downloads or phishing attempts. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a malicious intent.

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/how-to-hack-roblox-jailbreak-beginner-game-hack In PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-free-draw_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coinmaster_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/robux-get-com_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/vechile-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/pokemon-go-free-yanma_GM1094591345.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/minecraft-modded-client_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/get-free-vip-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id//repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.teknik.unimal.ac.id/repository/how-do-you-get-roblox-for-free_GM431946152.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_off00002fb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FB5 21768 bytes
SHA-256: e619ba122d53de83afa547e69bdfe3af2f67a22db3321cf313457308169b1e6e
font_01_sfnt_off00005fbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBD 19104 bytes
SHA-256: 27e9f7bd52ac8ec08eec422abe6a29509bce315342b76598215783669bea53bc

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