Malicious PDF — malware analysis report

Static analysis result for SHA-256 61ede610c56adea5…

MALICIOUS

PDF

37.2 KB Created: 2021-05-20 21:44:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 530c7ba54873fd8c9b8845e1d4b78473 SHA-1: 859e353e7c0bd0822a4974e896066b4c66798fd7 SHA-256: 61ede610c56adea5f09a84cab0478a833b8dcd4ad9fa197d00ecfa49f51a13d5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free account generators' or 'game hacks' for popular games. The document body and heuristics indicate a lure to download or access these 'hacks', which likely leads to further malicious content or malware. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-account-roblox-with-robux-game-hack In PDF document text
    • https://www.clarence-rockland.com/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/minecraft-hacks-for-2b2t_GM479516143.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://www.clarence-rockland.com/images/free-spins-for-coin-master-hack_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
stream_002_off0000332b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x332B 28076 bytes
SHA-256: cc96d6fc67a64c7b73a2011607a8505e07fd2c7d4478d4a30b7ac9d09b8d81f3
font_01_sfnt_off00006f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F12 18676 bytes
SHA-256: 668999cf9284642de193c24d0ad86807d097fd3a0f3919542938043f8a05e142

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