Malicious PDF — malware analysis report

Static analysis result for SHA-256 37dd413339d328a9…

MALICIOUS

PDF

37.5 KB Created: 2021-07-01 06:05:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 496f666ae7663589ce166a0bbf6bf882 SHA-1: f026af88a2ea4ef4c11482c90b3b158fd5290608 SHA-256: 37dd413339d328a99d32733f6404c4c4918468340dfe112113ca7fabcec724e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites offering game hacks and cheats, identified as malicious redirectors. The document body and embedded links suggest a lure to download potentially malicious content. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent, likely to distribute malware through these deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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/cheat-booga-booga-roblox-game-hack In PDF document text
    • http://digilib-ppsunisma.ac.id/repository/cheat-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/make-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/for-creeper-hack-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-into-a-roblox-account-2021-v3rmillion_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/aimbot-hack-for-roblox-cbro-fps-gui-10_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-unlimited-spins-game-download_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/nopde-engine-roblox-hackes-prison-life_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/is-tiktok-free-to-download_GM835599320.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/horse-valley-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/free-robux-maker_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/5om-free-robux-bday_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-ppsunisma.ac.id/repository/how-to-hack-accounts-on-roblox-with-cmd_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003aaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AAF 23028 bytes
SHA-256: 9053de242ca1b7e181d50da2318a1076b54509738ffa2bb539c0eef72dddd359
font_01_sfnt_off00006e75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E75 18756 bytes
SHA-256: 93c915e94091d3b8792552d91235abbe36fb7d6c6abec060e2a787af098add6a

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