PDF malware analysis — malicious · 5a40a366e1032a98

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 00:03:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16

MD5: f9afb3c1462e21fd87b104fb0d5a0e57 SHA-1: 85b9b29126a6304255a0a8b63a5b559cd7a15672 SHA-256: 5a40a366e1032a9866073b4c2356fcc677005789a0d4143c5832ec1bb8148926

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links designed to lure users into clicking on them, promising game hacks and free currency. These links lead to known malicious redirectors and a large number of SEO-linked PDFs hosted on a suspicious domain. The document's primary function appears to be driving traffic to these malicious sites, likely as part of a phishing or scam campaign.

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/how-to-hack-knifes-in-assassin-roblox-game-hack In PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-and-tix-android_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-template-download-free_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-hack-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-do-you-hack-and-make-yourself-bigger-on-robloxs_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-no-password_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-vip-roblox_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-free-android_GM479516143.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/can-u-make-ur-own-clothing-in-roblox-for-free_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-roblox-avatar_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/get-free-robux-codes-now_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/roblox-hotel-elephant-infinite-money-hack_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/will-you-get-hacked-buy-buying-robux-online_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/coin-master-mod-free-download_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-no-offers-or-survey-2021_GM431946152.pdfIn PDF document text
- https://www.misceren.com/home/misceren/public_html/upload/files/free-spin-coin-master-online_GM406889139.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_off00003011.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3011	22296 bytes
SHA-256: `2def8bd4d76501587e74302a74945ad03ad33dd5ca271ed5ba6d9379e89654e8`
`font_01_sfnt_off00006163.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6163	18940 bytes
SHA-256: `c40f875665c0559ce9b15170991effcb214384fdf042afaf0c62759cbc26f093`

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