PDF malware analysis — malicious · 782fcf5604b428ae

MALICIOUS

PDF

42.5 KB Created: 2021-05-20 14:11:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31

MD5: fd67b88049ae81806171687c09f57345 SHA-1: c12a572cc37a5d9820f405e4246f69da45e3dad2 SHA-256: 782fcf5604b428ae1b65d3cb3b38820ead4dcdc9e676173f5dd3c0ccbc4f2972

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links, one of which, 'https://netcdn.xyz/app/835599320/how-to-get-free-fans-on-tiktok-game-hack', is identified as a malicious redirector. The document body and heuristics indicate a lure related to 'free generators' or 'game hacks' to entice users to click these links. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a potential for JavaScript execution or redirection to malicious sites, aligning with common phishing and social engineering tactics.

Machine Learning

Nyx PDF Classifier malicious score 0.8161

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/835599320/how-to-get-free-fans-on-tiktok-game-hack In PDF document text
- https://www.legclub.org/uploads/files/files/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/are-robux-generators-safe_GM431946152.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
- https://www.legclub.org/uploads/files/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_002_off00003249.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3249	26516 bytes
SHA-256: `5627ebfe97ccdddbac36c8d3d937014104834a10b8161a1c0e940046f54f0e32`
`font_01_sfnt_off00006ef9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6EF9	3432 bytes
SHA-256: `dca3a45220191586621f30a3d4b47a7fc8494595e1917a66188a46e86ef1b5b8`
`font_02_sfnt_off00007ac6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7AC6	3120 bytes
SHA-256: `49734f51977507cba6bc8d3ad0cee0363aa119856db094427deb9cf565bb7bca`
`font_03_sfnt_off000085d9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85D9	17848 bytes
SHA-256: `727f71e4f5f246dc0575ee4a2b7a141c6425fe8d182f9faf2d9fa67fa9578c65`

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