PDF malware analysis — malicious · e92af13145406752

MALICIOUS

PDF

35.7 KB Created: 2021-07-03 19:42:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 15880003787ffc0fef0ea4917fe7e66f SHA-1: fc4b1b30b005a2d20fce75ac1424808b776e6715 SHA-256: e92af1314540675214e3c125ea1a476651dc0ae39bd16c05309e43ed458a69ee

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document acts as a lure, employing tactics to attract users with promises of free game currency and hacks. It contains numerous links to redirectors and a link farm, which likely serve to host further malicious content or phishing pages. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful 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/406889139/coin-master-free-spin-ml-game-hack In PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-have-free-hair-on-roblox_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-roblox-clothes-catalog_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-hack-free-robux-generator-phantom-forces-hack-android_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/glitch-to-get-free-robux-no-apps_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/robux-hack-no-verification-or-survey_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-get-never-ending-robux-no-hack_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/coin-master-free-gifts_GM406889139.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-mobile-hack_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/code-free-robux_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/minecraft-on-computer-free_GM479516143.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-robux-hack-using-cheat-engine-64_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-any-game-ban-script-hack_GM431946152.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
- http://www.goaheadmigration.com/uploaded_files/userfiles/files/roblox-how-to-get-free-shirts-2021-working-with-voice_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_off0000355b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x355B	23076 bytes
SHA-256: `3b920998731bd1dad2a7485b740109a8cf83f30d8b8fbec4b139115e51691d3d`
`font_01_sfnt_off00006943.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6943	18248 bytes
SHA-256: `c18038b999a15e068e0fcec6b3cb299d21e05aa15a09c32d3b19c8c95a871ee0`

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