PDF malware analysis — malicious · 2147c7443884fe5e

MALICIOUS

PDF

48.5 KB Created: 2021-05-31 11:43:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29

MD5: ec78f4d11f12fd8376382ff79208699b SHA-1: ce7abc7fcff8c69e5aa1c07b4b1484b0d865d735 SHA-256: 2147c7443884fe5e41b9b4c47ef7253a0536c3f77783a12ad3a79fa1a0e9ba81

82 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a 'free generator / game hack' lure, which is a common tactic for phishing or malware distribution. The ML classifier strongly indicates maliciousness. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest the document is designed to redirect users to malicious sites, likely for further payload delivery or credential harvesting.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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/431946152/does-roblox-ever-give-free-robux-game-hack PDF link annotation
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-com-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-free-app_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-roblox-hack_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-pe-free_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-cheat-engine-lua-table-scripts-2021_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/roblox-explorer-hack_GM431946152.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
- https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-comments_GM835599320.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_off000051a2.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x51A2	27608 bytes
SHA-256: `be7a7a621e7059c53c978280c381edc0ad907cce39afc2d7fb3df899d0b41e0d`
`font_01_sfnt_off0000906f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x906F	2892 bytes
SHA-256: `c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4`
`font_02_sfnt_off00009a58.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9A58	18488 bytes
SHA-256: `6c4c7864d128ba0b81e02a72c882ca5a3e05b6862d95c7bad752b0d7adc42938`

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