PDF malware analysis — malicious · d496702124766607

MALICIOUS

PDF

41.4 KB Created: 2021-04-27 17:31:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 7a58bec6d5e7adb03d9fd12c9cb4c110 SHA-1: 3334de644c136043545f634e453f7417afec98be SHA-256: d496702124766607330d089d5888e91a2ceccb074d1b8d7648678c650901dd2f

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links, with one prominently identified as a malicious redirector leading to a 'free generator / game hack' lure for Roblox. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the embedded URLs and the nature of the lure suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites, likely for credential harvesting or malware delivery.

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/roblox-fly-hacks-2021-game-hack In PDF document text
- https://slims.bakrie.ac.id/textbook/repository/roblox-dinosaur-simulator-hack-2021.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/infinite-jump-hack-roblox.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-to-get-free-robux-june-2021.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/we-hack-robux-generator.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/roblox-knife-simulator-hack.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/get-25-robux-free.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-to-stop-cheat-engine-on-roblox.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-do-get-free-robux-in-roblox.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/roblox-hacked-shirt-id.pdfIn PDF document text
- https://slims.bakrie.ac.id/textbook/repository/how-to-hack-stuff-in-roblox-youtube.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_off0000424d.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x424D	26156 bytes
SHA-256: `abb68a773f9e8772ba7fae8b7aa606cbd8bb84e5d2896ad681d48ee2cdafd9d9`
`font_01_sfnt_off00007e29.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E29	18928 bytes
SHA-256: `5da572b74eae9e23f10a088bd95b233ba3a8f2abc2e386b103279c57e318c5d0`

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