Malicious PDF — malware analysis report

Static analysis result for SHA-256 07ced605e5aab49f…

MALICIOUS

PDF

37.3 KB Created: 2021-05-12 14:05:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: bedd2c7c71fe85f2030aac627200121f SHA-1: 39fc1b1b50595793be121a5115a553c60719817e SHA-256: 07ced605e5aab49f0f50c2504d816b8ff43862e16af9275cd5215f07d62daa04
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "free generator / game hack" which links to a known malicious redirector. The document body also contains the URL and a call to action, suggesting an attempt to trick the user into visiting a malicious site. While no scripts were explicitly extracted, the nature of the lure and the embedded URL strongly indicate a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier clean score 0.0334

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/game-give-free-robux-game-hack In PDF document text
    • https://www.bandicam.comIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000033cd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x33CD 26496 bytes
SHA-256: cf32a28cdc605cbe35ec498b7d0385b1108aaa63c1b0ab715a2e66f9885cd574
font_01_sfnt_off00006f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F49 18736 bytes
SHA-256: 457049c0c0b067ea8a2ccaf5c24f39a354f8c872058b648fa686429afe9091ea

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