PDF malware analysis — malicious · be9c205c5ae551c2

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 20:57:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25

MD5: cbae03488cd31780cde8326d693093b9 SHA-1: 4946d96005499414c5fb030ca97153531a5513dc SHA-256: be9c205c5ae551c2ce6db97cd1d774a8654d0e160328d0e186940f0f9133e9c3

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on what appear to be free game hacks or currency generators. These links lead to malicious redirector infrastructure, such as http://netcdn.tw/app/479516143/minecraft-coins-free-game-hack, which likely serves as a gateway to further malicious content or downloads. The presence of multiple PDF links also suggests a link farm intended to improve SEO for malicious sites.

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.tw/app/479516143/minecraft-coins-free-game-hack In PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/minecraft-bedrock-hacks-windows-10_GM479516143.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/roblox-xbox-packages-free_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/can-pokemon-go-free-incense_GM1094591345.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/roblox-guess-that-character-for-free-robux_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/is-pokemon-go-free-on-ios_GM1094591345.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/catalog-roblox-free-hair_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-make-free-admin-in-roblox_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-hack-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/roblox-shoes-free_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/free-rhs-cash-in-roblox-high-school_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-free-robux-no-hack-on-ipad_GM431946152.pdfIn PDF document text
- https://padang.indahkonveksi.com/ckfinder/userfiles/files/giving-free-robux-in-this-roblox-group_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_off0000340d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x340D	22652 bytes
SHA-256: `ff9e315e9db82dd1e2e494ef1d891936adf59c8a79b872221f632fb2de816c6f`
`font_01_sfnt_off0000661a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x661A	17996 bytes
SHA-256: `57addac7b62f6982da03a34d469d6734b49e3a67e494fbb995a28ec062f8da05`

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