PDF malware analysis — malicious · 10cfb158e0c016a8

MALICIOUS

PDF

34.2 KB Created: 2021-06-19 20:29:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22

MD5: 9655bceabd2cdeec298925e61edf102d SHA-1: 79837c2a72d7e99c6306a8edf01765acf4d93107 SHA-256: 10cfb158e0c016a894241aeff501c504836e0af3dd99bdf5ca337e767ea2b61a

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, presenting itself as a generator for free game currency and hacks. It contains numerous links to external sites, including a known malicious redirector at http://netcdn.co/app/431946152/free-robux-codes-no-survey-2021-game-hack, and a large number of links to other PDFs hosted on www.alajwakh.com, forming a link farm. The presence of a visual download button further supports the deceptive nature of the document. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful content or further stages of an attack.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-robux-codes-no-survey-2021-game-hack In PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/comment-faire-marcher-synapse-hack-roblox_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-survey_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-spin-ml-link_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/hack-para-unique-case-clicker-giveaway-at-600-likes-roblox_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-free-spin-trick_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/robux-com-free_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coin-master-card-hack_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/coinmaster-com_GM406889139.pdfIn PDF document text
- http://www.alajwakh.com/uploaded_files/userfiles/files/all-cool-free-shirts-in-roblox_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00002efd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EFD	21732 bytes
SHA-256: `381a0e9f24a088f38a268b1057e6472dab2bd75cf96398d7c1c25dff9ff265a2`
`font_01_sfnt_off00005e90.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E90	19588 bytes
SHA-256: `8ac6b3e4383568f64429bfa5dc849fad5e5c4bfebc7e9e5fd1ea4237eb00e86c`

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