PDF malware analysis — malicious · c185bcb1400ea658

MALICIOUS

PDF

45.7 KB Created: 2021-05-15 13:03:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 2590a81ad922835d32d19d718fffb284 SHA-1: 076f2f3b9a0a1fce3427693d5ea9b5f519378e7a SHA-256: c185bcb1400ea658d5d7a9e8ccd596456f9e3e9b7dc6db61af8dc48420c2b00f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators". The primary lure URL is https://netcdn.xyz/app/406889139/coin-master-apk-mod-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to drive users to potentially malicious sites, likely for malware distribution or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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-apk-mod-game-hack In PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/scaffold-minecraft-hack_GM479516143.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-game-free-download_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/daily-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-free-online-game_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/moonactive-free-spins-link_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/hack-coin-master-download_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-free-stuff-links_GM406889139.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004a50.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4A50	25824 bytes
SHA-256: `b90f50aec6ce7993c78920b3d64d79650aff852f0ecfb851c6ddb45284998aea`
`font_01_sfnt_off00008595.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8595	3400 bytes
SHA-256: `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`
`font_02_sfnt_off000090bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90BF	18068 bytes
SHA-256: `2c3cf7250ac5d61567888116a17491d74a4f396c7f94827d3a6194a9a0c7da5e`

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