PDF malware analysis — malicious · 686d65d8d2e4ab27

MALICIOUS

PDF

35.3 KB Created: 2021-07-04 20:43:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23

MD5: 01970597e9187bb078e1dd95444dd517 SHA-1: 133da432d4b1fa852f700fbc3c09e6c5acc761cf SHA-256: 686d65d8d2e4ab27d95fda443ea3332b36d11bcc66ccc335e198f1e021218c1d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded URLs, including one that points to a known malicious redirector infrastructure. The document body text and heuristic firings indicate a lure for game-related cheats, likely intended to lead users to a malicious site for further exploitation or malware delivery. No scripts were extracted from this sample, but the presence of embedded URLs and the nature of the lure suggest a phishing or social engineering attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-today-gift-reward-game-hack In PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-get-free-robux-no-verification-on-ipad_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-hack-for-robux-on-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-hack-bss_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-discord_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/your-bizzare-adventure-script-esp-free-2021-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-spawn-hack-in-apocalypse-rising-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/medieval-hood-of-mystery-roblox-free_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-group-payouts_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/claim-free-robux-button_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-app_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-redeem-card-codes-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/robux-hack-v1-0_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-wall-hack-in-roblox-murder-mystery-2_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
`font_00_sfnt_off00003208.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3208	23076 bytes
SHA-256: `f1f4fad7640fd8d85f879a604901dc47be5a350c0a6158d6575afa7c223fb3f8`
`font_01_sfnt_off0000660c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x660C	18692 bytes
SHA-256: `d31088ae19f241ea86c3227f133fc8e6698cecaa627da06b5b2cde690df300ac`

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