Malicious PDF — malware analysis report

Static analysis result for SHA-256 98283ca8ee2e188f…

MALICIOUS

PDF

41.6 KB Created: 2021-04-23 17:28:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: de40f5d1aa8d2330912138de07fbe97b SHA-1: 1d16f9e3df22ded8a3357664843ad1f221d3a530 SHA-256: 98283ca8ee2e188f966237f41dcccabf96d788ae6a88a6a53585b76c76f3d26b
110 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure related to game hacks and free in-game currency to entice users. It contains multiple links to external websites, including one that appears to be a generator or hack site. The document body also contains urgency language and a call-to-action button, further supporting a phishing or scam attempt. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netsecure.top/app/431946152/how-to-get-free-skin-in-roblox-2021-game-hack PDF link annotation
    • http://sudamericarural.org/images/free-robux-hack-true.pdfIn PDF document text
    • http://sudamericarural.org/images/admin-commands-roblox-hack.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-free-download-jaleco.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-restaurant-tycoon-hack-lua-c.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-counter-blox-hack-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-injector-hack-2021-synapse.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-hack-roblox-and-get-meep-city-coins-fast.pdfIn PDF document text
    • http://sudamericarural.org/images/a-free-trial-on-roblox.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-get-free-dominus-in-roblox-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/how-to-get-free-robux-2021-march.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_003_off0000426c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x426C 26588 bytes
SHA-256: 5f2de95378e96c3d0048d494aa37ff11d2db378a5cbc61a88aa95b02cdc0ffac
font_01_sfnt_off00007f1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1B 18908 bytes
SHA-256: 4ab848eeac86cd4b0acfd537dd5e58ed6a4063d8796c2ffe239f946a5977a15c

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