PDF malware analysis — malicious · a1eadb0cc692b63f

MALICIOUS

PDF

45.8 KB Created: 2021-05-12 13:16:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 826eb4c9cbf66ce39ac091d131430ae2 SHA-1: 326412e228ebbbf45b7393794f338726f00bee97 SHA-256: a1eadb0cc692b63f8ae7106b7e4581e409ab7881f0abda8a1227a395ae2566b0

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector. The document body and heuristic firings indicate a lure related to game hacks and generators, designed to entice users to click on these links. The primary malicious link identified is https://netcdn.xyz/app/406889139/how-many-levels-are-in-coin-master-game-hack, which is associated with a redirector. This suggests the document's purpose is to lead users to potentially harmful content or malware downloads.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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/406889139/how-many-levels-are-in-coin-master-game-hack In PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/robux-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/free-minecraft-games-for-kids_GM479516143.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/get-gold-coin-master-village-hack_GM406889139.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/coin-master-level-3_GM406889139.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/free-minecraft-packs_GM479516143.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/free-robux-master_GM431946152.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
- https://comunidaddeatencion.argentina.gob.ar/ckfinder/userfiles/files/hack-coin-master-game-download_GM406889139.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_off00004d98.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4D98	25108 bytes
SHA-256: `7ccbdee835d0cbcdebbc351690bebaeefdaa285feab6b35c4446798741b6054c`
`font_01_sfnt_off00008667.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8667	18076 bytes
SHA-256: `54e54f6e61ae990098bb4cdf24a44bcdd14b606a50495af7ec2cc921364cf956`
`font_02_sfnt_off0000a7df.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA7DF	3264 bytes
SHA-256: `e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088`

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