PDF malware analysis — malicious · ecce339fc37a62d4

MALICIOUS

PDF

45.0 KB Created: 2021-05-11 23:06:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05

MD5: 1b5e07f148b3ef6750fa1d91ca347574 SHA-1: aa853ce027b13e1f30027816afc14e8df4047f13 SHA-256: ecce339fc37a62d4a1fdbce1e924bcb9c66cdbfb672339f1a7a79397211e6b19

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic indicating it links to a 'free generator / game hack' lure. The document body and embedded URLs reinforce this, pointing to a URL associated with game hacks. While no scripts were extracted, the PDF structure and linked content suggest a social engineering attack to redirect users to a potentially malicious site.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

Heuristics 4

PDF links to a 'free generator / game hack' redirector high 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.
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
External URI info PDF_URI

PDF contains an external URL action
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/406889139/how-to-get-free-spins-for-coin-master-game-hack PDF link annotation
- https://www.sarsen.net/uploads/files/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coinmaster-blogspot_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-free-spins-5-10-2021_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/mcpe-master-hack-unlimited-coins-download_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/mcpe-master-unlimited-coins-free-download_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/minecraft-education-edition-free_GM479516143.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/freerobuxhack-us_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sarsen.net/uploads/files/files/how-to-get-robux-for-free-2021_GM431946152.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_off00004b80.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4B80	24884 bytes
SHA-256: `81d4e1e65a7f6a46571358896837cfde543802d761a3a5a44d5f04cbedd361dc`
`font_01_sfnt_off00008432.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8432	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008de4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DE4	18052 bytes
SHA-256: `3cfae0e628493b06a11893ba870a091d0c1d4835c1ebffdd70b8f2a1c7d637a9`

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