PDF malware analysis — malicious · 2c8621434d6ec881

MALICIOUS

PDF

45.3 KB Created: 2021-05-10 18:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23

MD5: 7bb033b35f698f6ee21bd86fba3dcf6e SHA-1: 497b06e90c498f007295483fb031c88e00a8981e SHA-256: 2c8621434d6ec881123795aa7a1e8f12996ed87d8ff50a2e29abfaa2d11f52ed

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hack generators. These links lead to further PDF files hosted on a suspicious domain, indicating a phishing or scam campaign. The ML classifier also flagged this PDF as malicious, supporting the observed malicious links.

Machine Learning

Nyx PDF Classifier malicious score 0.9507

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/coin-master-free-spins-apple-game-hack In PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/easy-robux_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/village-coin_GM406889139.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/roblox-hacks-com_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/free-robux-games-that-actually-work-2021_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/free-robux-only-username_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/woman-roblox_GM431946152.pdfIn PDF document text
- https://min14.pendmakabblitar.online/__statics/gudangsoal/files/free-robux-reddit_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_off00004cb5.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4CB5	24852 bytes
SHA-256: `2be802364758b870a681342fbccaf45f00cd7f900ab154e88f9a6fb77f7e1d4f`
`font_01_sfnt_off0000860a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x860A	2840 bytes
SHA-256: `3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676`
`font_02_sfnt_off00008fbc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8FBC	17960 bytes
SHA-256: `b36d82a69cb85e4c678515c56ecb428cbe565fcb1c36aa2c67d2b595c698cd3f`

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