PDF malware analysis — malicious · e3413a7d985dd17b

MALICIOUS

PDF

41.3 KB Created: 2021-04-27 05:19:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: b4d2a27cb9ef1ebccd46b1d86f801c24 SHA-1: 194c5752a236e6ce93b872616865d9c734c46559 SHA-256: e3413a7d985dd17b57d25e45f31b1d8c19e7a89af9945688c1ddcc9557a8259d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are either known malicious redirectors or host potentially malicious content related to game hacks and free currency. The document body explicitly mentions 'Free Robux' and 'Game Hack', and includes a call to action to access a generator, indicating a social engineering lure. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent, likely leading to further malware downloads or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9941

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/no-loading-how-to-get-free-robux-game-hack In PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-bee-simulator-hack-download.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-to-hack-buildermans-password-on-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/hack-free-robux-2021.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-to-get-vip-for-free-on-roblox.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/tycoon-roblox-hack-script.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-to-get-free-items-in-roblox-no-hack.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/roblox-bhop-hack.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/free-robux-2021-code-jamais-utiliser.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/how-to-hack-roblox-for-admin-commands.pdfIn PDF document text
- https://lib.stie-yai.ac.id/repository/free-vip-server-roblox-lumber-tycoon-2.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_off0000428e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x428E	25844 bytes
SHA-256: `640594ad9264d66a981c46720c1c4244748f505f3ccd950bbfbb3ea291744e11`
`font_01_sfnt_off00007cfc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7CFC	19092 bytes
SHA-256: `24dba3e195b729c9392652a7ad91ea948989255a9013d986b026081dcdce193b`

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