PDF malware analysis — malicious · ab46b8fa6cdbdcad

MALICIOUS

PDF

35.3 KB Created: 2021-06-18 01:18:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 7b67ab828e204b8f978b0361a779b6ae SHA-1: fa0d0ce46463eb6019ff74607e5c4456f1e1beb8 SHA-256: ab46b8fa6cdbdcadd4bc03e7b4e1d0988a3b1c6140a005706a8bd8e43a3b2c17

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including one to a known malicious redirector infrastructure at http://netcdn.co/app/479516143/minecraft-free-download-unblocked-game-hack. The document body and heuristics indicate a lure for game hacks and free generators, a common tactic for distributing malware or leading users to phishing sites. The presence of many external PDF links suggests a link farm designed to improve SEO for malicious content.

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/479516143/minecraft-free-download-unblocked-game-hack In PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-download-minecraft-for-free-on-your-phone_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-hair-to-wear_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/100-free-tiktok-followers_GM835599320.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_off00003438.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3438	22136 bytes
SHA-256: `55462ada9b85b672a3a9d84ceb86d7a30a0af24a73552a01e42c94d3dba2dd85`
`font_01_sfnt_off0000651a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x651A	19092 bytes
SHA-256: `b89de8ec978c760e16c728bf26098254cc88868f8675788ef266acc2a2d3d026`

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