Malicious PDF — malware analysis report

Static analysis result for SHA-256 7aa38b3ed8c95b9d…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 11:35:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: dc1c0b434aeb83a434d2441fdaeefbe6 SHA-1: 496f3654c6de3a2483cd485f3ebbcf945a8ef632 SHA-256: 7aa38b3ed8c95b9dc4cb729603680399c550f65601c18cffde2434de279071de
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body and embedded URLs reinforce this by referencing 'freerubux' and 'game hack' related to Roblox. While no scripts were explicitly extracted, the nature of the lure suggests a potential for further malicious activity upon clicking the link.

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.tw/app/431946152/freerubux-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/can-i-make-a-costum-charecter-is-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-lumber-tycoon-2-money-hack-script_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/dragon-ball-rage-roblox-cheat-engine-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/admin-hacks-roblox-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-boombox-hackroblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/generator-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-codes-that-nobody-have-havent-used-yet_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-quick-and-easy-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-stuff-in-roblox-working-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/bux-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/descargar-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-run-fast-roblox-the-strets-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-restraunt-tycoon-hacks_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/como-hackear-roblox-en-meepcity_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-links-for-coin-master_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_off00003085.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3085 22912 bytes
SHA-256: 625e84759f006f24346393ca52ce6ca7833e9e975db932b7ea3b25178f42d7b3
font_01_sfnt_off000063ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EC 18572 bytes
SHA-256: a4910544a3301e21d5425f47d387c0dcd2b1454e32e0c532c02705c370365377

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