Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c0335c3c938c9f5…

MALICIOUS

PDF

40.5 KB Created: 2021-04-28 16:46:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e093283a7f2be949511676ff9f30d192 SHA-1: 9c48c52f58549d28a077d35303e3a4623300f0c1 SHA-256: 7c0335c3c938c9f5d40baba1ef0206ddf3ba4cacd1ee0f7e74f9949626273195
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, disguised as a 'free generator / game hack'. The document body and heuristics indicate a lure using urgency and a call-to-action button to encourage clicks. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9215

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.
  • 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.
  • 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
  • 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/roblox-walk-through-walls-cheat-engine-jailbreak-game-hack In PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-hack-other-roblox-accounts.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/how-to-make-a-free-robux-hack.pdfIn PDF document text
    • https://www.bolsoshf.com/ckfinder/userfiles/files/como-hackear-conta-de-roblox.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_003_off00003ccf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3CCF 26692 bytes
SHA-256: adffd8c48efcd9e612253593a2de314c95f2ef47fd54f43283040d6f5ccf243a
font_01_sfnt_off000079da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79DA 19364 bytes
SHA-256: 3ac033566fa0b5de3e0d7918b4768a1b973362c769dbb886b8b8f86c2ee267bf

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