PDF malware analysis — malicious · cba42c71f903c8ee

MALICIOUS

PDF

32.2 KB Created: 2021-07-19 12:30:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 8e6c275e440a490ede996f631e7a5f52 SHA-1: a00f3a1291e501698979a0afeddd95316ca0ae59 SHA-256: cba42c71f903c8ee73b4103131a59972e78b70d681ec68f365c8b5ff3d49ed08

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising free game hacks and generators. The heuristic firings indicate that the PDF is designed to lure users to these malicious sites, likely as part of a phishing or scam campaign. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

Nyx PDF Classifier malicious score 0.9900

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/479516143/free-24-7-minecraft-server-game-hack In PDF document text
- http://www.torvet11.dk/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://www.torvet11.dk/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.torvet11.dk/images/minecraft-java-free_GM479516143.pdfIn PDF document text
- http://www.torvet11.dk/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
- http://www.torvet11.dk/images/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
- http://www.torvet11.dk/images/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
- http://www.torvet11.dk/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
- http://www.torvet11.dk/images/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
- http://www.torvet11.dk/images/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
- http://www.torvet11.dk/images/minecraft-skins-download-free_GM479516143.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_off00002a6d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2A6D	22600 bytes
SHA-256: `08e32757cea629c3a37c5ec21a69f9d5a7c180ded307a8b33893c59468e4d1e9`
`font_01_sfnt_off00005cd3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5CD3	17924 bytes
SHA-256: `6d441e79e96f2496e7d363a8fd4eac2c27151cb1acb88a4e303d16644f1cdf17`

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