PDF malware analysis — malicious · 5e9ce1c99d2d37e7

MALICIOUS

PDF

47.0 KB Created: 2021-05-31 13:18:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26

MD5: 96d0af209edb8f45c20b532cb53b68b9 SHA-1: ce553225dab058487656c930703467d766dbf462 SHA-256: 5e9ce1c99d2d37e74f98337c4766dbff543a1b6d141cc6c9b36cb23134ecb828

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on what appear to be game hack or free currency generators, but which actually lead to known malicious redirector infrastructure. The document body contains obfuscated text and references to a generator URL, suggesting an attempt to disguise the malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a phishing or redirection attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

Heuristics 5

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.
Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
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/431946152/https-roblox-robux-hack-2021-game-hack In PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-tiktok-accounts_GM835599320.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/tiktok-free-views_GM835599320.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/roblox-hack-generator_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/eternial-moon-skylight-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-robux-by-downloading-apps_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-h-roblox_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/rbx-free-robux_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-robux-website_GM431946152.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
- https://www.woodentec.de/wp-content/uploads/fsqm-files/free-robux-obby_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
`font_00_sfnt_off000051e7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x51E7	24532 bytes
SHA-256: `2ddcd5c2c28dcba4edb74ae6fa735b247f9a44d639da3516d661aae98eaf5e05`
`font_01_sfnt_off0000887c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x887C	2940 bytes
SHA-256: `eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a`
`font_02_sfnt_off0000928c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x928C	19004 bytes
SHA-256: `46199a594bed97c8ac2e92481274c81d3f999c9927cdc9611110c812fe37d60b`

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