PDF malware analysis — malicious · 75001057e098ebe3

MALICIOUS

PDF

47.3 KB Created: 2021-06-03 03:52:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 57b85e8bd163892b582b1efdc69f1dbc SHA-1: cf8cb20eb0bb383759df2cdc9a74a143cc3d0a50 SHA-256: 75001057e098ebe375eff2dffb0584b04f15bcaf3dda46f758f1e950e432e930

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are identified as malicious redirectors, specifically promoting 'free generator' or 'game hack' lures. The document body, though partially garbled, contains text related to 'Free Robux No Generator' and includes a URL that aligns with the heuristic findings. The presence of numerous external PDF links further suggests a link farm or redirection tactic, likely intended to lead users to phishing or malware download sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9769

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.online/app/431946152/free-robux-no-generator-game-hack In PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/hack-coin-master-game-apk_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/coin-master-facebook-page_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/coin-master-spin-hack-2021_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/roblox-mod-hack-robux_GM431946152.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/minecraft-pe-apk-free-download_GM479516143.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/coin-master-hacker-club_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
- https://promotvsatelit.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021_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_004_off00004fab.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4FAB	24956 bytes
SHA-256: `64628e9fe086c65ddea517aa72ab410ef8447e02d83048859c98aebbe41a03d3`
`font_01_sfnt_off00008953.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8953	3884 bytes
SHA-256: `40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf`
`font_02_sfnt_off000095fb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x95FB	18344 bytes
SHA-256: `d0a2580a9848789708f711aeedd4c44eef26827bf748da476089155bc80243e8`

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