PDF malware analysis — malicious · 10ae4fcb54bd4868

MALICIOUS

PDF

48.2 KB Created: 2021-06-09 16:04:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 56526d36bff7460de233cbc86fee5b5a SHA-1: 640cf7fffc1937c7c06f21a7e1189005cb833907 SHA-256: 10ae4fcb54bd48680515d6e4ee30e578fb5bc20e338ee00c0f2ce375252134dd

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game passes or hacks for Roblox. These links lead to malicious redirectors and a farm of SEO-optimized PDF files, indicating a phishing or scam campaign. The document's structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful websites.

Machine Learning

Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-gamepasses-for-roblox-op-as-f-game-hack In PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/free-unlimited-robux-no-hack-or-survey_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-hacks-jailbreak-noclip_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-clothes-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-bubble-gum-sim-hack_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-hack-apk-2021_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-free-shirt-in-roblox-2021_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-free-robux-in-roblox-iphone_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/robux-free-online_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/minecraft-free-version_GM479516143.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-tiktok-famous-free_GM835599320.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/how-do-you-download-roblox-hacks_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/enter-password-for-free-robux-animation_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/free-robux-site_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-codes-for-free-stuff-2021_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/free-dress-in-roblox_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-get-marshmallow-head-in-roblox-2021-for-free_GM431946152.pdfIn PDF document text
- https://www.lubar.it/wp-content/uploads/fsqm-files/roblox-free-shoulder-pets_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_off00004fe5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4FE5	26344 bytes
SHA-256: `c720c8ecf7d1961d525fb0aa4cd1e6b83da2482692bdd8eec70ab96448df7f12`
`font_01_sfnt_off00008b82.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B82	3992 bytes
SHA-256: `43e72e756231cfd354bd65c2ed3b09ad4eff56ad11e7f155ed2920e6bb7860dd`
`font_02_sfnt_off000098a9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98A9	18612 bytes
SHA-256: `c6702484f7a692fb1eba651ccee6ed44b622a39cf3da282438e64f303fab6bf4`

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