PDF malware analysis — malicious · 7147e8082c4e027a

MALICIOUS

PDF

47.1 KB Created: 2021-06-03 16:25:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 5b45929c3aa5b62ec257e75b432ce216 SHA-1: b90ba999446acbd2f8a89c6993e2bd132b3fb8f5 SHA-256: 7147e8082c4e027aeb469f745956b04a41c2c651b1ac72c78466a12529444b31

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure URL is https://netcdn.online/app/406889139/se-puede-hackear-coin-master-game-hack, which is associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering tactic to redirect users to potentially harmful content.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/406889139/se-puede-hackear-coin-master-game-hack In PDF document text
- https://www.andrology.co.uk/uploads/files/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/minecraft-free-version-pc_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-youtube_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/free-robux-link_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-and-spin_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/master-coin-free-spin_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/coin-master-free-spin-link-today-16-11-2021_GM406889139.pdfIn PDF document text
- https://www.andrology.co.uk/uploads/files/files/robux-generator-no-survey_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_004_off00005309.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x5309	25204 bytes
SHA-256: `6f5fa5f5fb19a7600d3ef3b5a48b94bb2a8dc5f7729b06af6b501c3622971d31`
`font_01_sfnt_off00008bdf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8BDF	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00009591.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9591	18184 bytes
SHA-256: `52a96ef7ba39a26893895b90e9b4f2c5af116e165a9a1008a5be9b99a8a362cf`

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