PDF malware analysis — malicious · 25f6f10bce8f2e9c

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 18:02:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 41b0e2531346a266c1965fa7748883d0 SHA-1: adea3efc32f0c804648fe31929ac03a01d59c779 SHA-256: 25f6f10bce8f2e9c546fad2f9aad0934284877b450eb34f02b6827394e8ffedf

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that point to known malicious redirector infrastructure, specifically designed to lure users with game-related cheats and generators. The ML classifier also strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious websites for further exploitation, likely through a social engineering pretext.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-free-cards-game-hack In PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-15-free-spin-link-today_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/real-robux-codes_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-spin-and-coin-links_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-hack-2021-apk-download_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-exe_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-codes_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-coins-and-spins-daily_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004d92.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D92	25244 bytes
SHA-256: `a5a6d8c553273688822bb32ff3e1ffa40a9c5c890659c5dc3eab3fa925a29bf4`
`font_01_sfnt_off00008637.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8637	17884 bytes
SHA-256: `dce98ab1a9f6331dfaabbdd57dacdba92c66b57249d10e9c2a1df39138c2a47b`

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