PDF malware analysis — malicious · c2a6b14cce094ba8

MALICIOUS

PDF

45.8 KB Created: 2021-05-14 07:52:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20

MD5: 3524f6ccf8742e0f965a66364bc9d6a9 SHA-1: d562d8bc2c65a7b832f547adbff9b3802843767e SHA-256: c2a6b14cce094ba83bdb161342b0daa80cdaef85a38ce828d422c8d1db34f4a2

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document employs a lure of game hacks and free in-game items to trick users into clicking malicious links. It contains a mass external PDF link farm, directing users to various SEO-optimized PDFs hosted on foc.vn, and also links to a known malicious redirector at netcdn.xyz. The document's structure and embedded links strongly suggest a phishing or scam campaign aimed at driving traffic to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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 https://netcdn.xyz/app/431946152/free-roblox-clothes-boy-game-hack In PDF document text
- https://foc.vn/public/upload/files/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-get-free-minecoins-in-minecraft_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-spin-link-in-coin-master-game_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-scam-on-roblox_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-hack-xyz-2021_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-robux-pastebin_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-card-collection-link_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/free-robux-no-offers_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
- https://foc.vn/public/upload/files/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
- https://foc.vn/public/upload/files/robux-gratis_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`stream_003_off00004970.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4970	26600 bytes
SHA-256: `d11afb731f9160507e3f6253f77925a5460211db647ddad9f25519d3beb74cd0`
`font_01_sfnt_off000085d0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x85D0	2992 bytes
SHA-256: `c9589250b6e3dd7e493fc9a03624bebef57e2a5a7267189a2827bf8e702c894e`
`font_02_sfnt_off00009026.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9026	18400 bytes
SHA-256: `ff0928d05cd2328f5f6db263fee94a7b5023d77c4cae175890f1311eb4a8d902`

Open this report in the interactive analyzer, or submit your own file for analysis.