PDF malware analysis — malicious · 78f876a4c5efb696

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 09:45:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25

MD5: 1723f369aaf47148b5a4dbbd750f074f SHA-1: fa61d2836e5926f004dd18ee4648b6d60f0fc7e0 SHA-256: 78f876a4c5efb6967285d2c35bfb1368cc75655f8ddf6251a741d3ccc71398a3

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains numerous links disguised as generators or hacks for popular games like Roblox and Coin Master. These links redirect to malicious infrastructure, specifically http://netcdn.co/, which is flagged as a malicious redirector. The document body and heuristics indicate a lure for users seeking free in-game items, a common social engineering tactic. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious intent to redirect users to potentially harmful content or further stages of an attack.

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/cheat-roblox-pour-acheter-des-gamepass-gratuitement-game-hack In PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/robux-apk_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-free-online_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/coin-master-cracked-apk-free-download_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/http-appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/how-to-get-free-robux-legit-2021_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/roblox-free-robux-game-no-password_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/free-stuff-for-roblox-avatar_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/bloxpink-free-robux_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/robux-offer-wall_GM431946152.pdfIn PDF document text
- https://www.sahebspices.com/uploaded_files/userfiles/files/minecraft-pe-free-download-ios_GM479516143.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_off00002ee6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EE6	21640 bytes
SHA-256: `d3f6dfc486dc3d4cee54f2d284329c85a8a6e826eeaa7970d331b453ba2bd0d2`
`font_01_sfnt_off00005e62.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5E62	19772 bytes
SHA-256: `2104ed217ea79cb0fbea12f893e94366f15e621a13faa115f7babc7ed7709167`

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