PDF malware analysis — malicious · 94f47c2df5241a1c

MALICIOUS

PDF

47.9 KB Created: 2021-05-11 20:03:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 1ce06976558a237b52fed0b736a29aa7 SHA-1: 09a899bc972e68ba8c3665f7e221f982a1fee4bd SHA-256: 94f47c2df5241a1cb74f495fbaabcc50a52a942bbbfada3ea14514421900f6b5

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF file contains numerous links to websites offering game hacks and generators, such as 'free-robux-mobile-game-hack'. The presence of a malicious redirector link and a large number of external PDF links indicates a coordinated effort to drive traffic to potentially harmful content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a lure for users to download further malicious content or visit compromised sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9013

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/free-robux-mobile-game-hack In PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/xray-hack_GM479516143.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-pet-food-for-coin-master_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/monttechscom-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/add-robux_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/earn-robux-sites_GM431946152.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/best-site-for-free-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
- https://lpk-citranusantara.com/ckfinder/userfiles/files/free-spins-coin-master-2021_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_off00004cbb.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CBB	28796 bytes
SHA-256: `ab240bf477c5ef7ce15f17955f9f038db3fbb8e84e7a26776bcb6acc90e2d440`
`font_01_sfnt_off00008d66.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D66	3400 bytes
SHA-256: `4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07`
`font_02_sfnt_off00009890.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9890	18404 bytes
SHA-256: `0c312729e80e6e0ca2ee9f4904992f86151ccd5d23fc73e43cbe09e8497f8a48`

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