Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe2d04cfa15c82bd…

MALICIOUS

PDF

40.3 KB Created: 2021-05-21 23:09:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 33d5fdc7e1248740afefc2efa23dcc04 SHA-1: 1b7630c271cae6b10f9bcd86d888cfeec4021abd SHA-256: fe2d04cfa15c82bddf7a100408469ac237b684129ba87c576ab695129489e3fc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting 'free Robux' or 'game hacks'. The heuristic firings confirm the presence of malicious redirector links and a lure for game-related exploits. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7768

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 https://netcdn.xyz/app/431946152/free-robux-exe-game-hack In PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/hack-coin-master-spin-android_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn8madiun.sch.id/__statics/gudangsoal/files/minecraft-multiplayer-free_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32E9 27232 bytes
SHA-256: aed9fcad27b19be3f41404bfc1c46cf3ddd599913c511c4929474503ad3015d7
font_01_sfnt_off00007353.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7353 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off00007d03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D03 18012 bytes
SHA-256: 1e3fda203f08fe42ab00f6cef97e605bb68f7e374108f28afe3c353055d0c9d6

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