PDF malware analysis — malicious · 5c2ef323c4564737

MALICIOUS

PDF

42.5 KB Created: 2021-06-13 19:43:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: c88fe2ff2af1e6dc8ebc5c65c802ed29 SHA-1: 2fc999822fb45e5eddb8b8357094f0e6072575a0 SHA-256: 5c2ef323c45647372c18578dd311762ba0361a259892f7e978a320fa519e5b07

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on domains associated with SEO link farms and malicious redirectors. The primary lure appears to be 'free Robux' or 'game hacks', a common theme in phishing and scam campaigns. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

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/websites-to-get-free-robux-game-hack In PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/earn-robux-sites_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-hack-spin-160-pro_GM406889139.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-level-3_GM406889139.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-roblox-script-executor_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-jackpot-hack_GM406889139.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/ninja-legends-roblox-cheat_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/roblox-flood-escape-to-how-to-get-fly-hacks_GM431946152.pdfIn PDF document text
- https://www.hortonstmichaels.co.uk/admin/ckfinder/userfiles/files/coin-master-free-spins-and-coins-link-haktuts_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_off00004b2f.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4B2F	25396 bytes
SHA-256: `0c886032e3ca208d9b4f5c537b9d34d14541bab5a6b8fea3f5cad51f57eb8321`
`font_01_sfnt_off000082c3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82C3	18620 bytes
SHA-256: `8b310fbc985155bad00ff409e87d25ad2550cfb3736306c0a5754e3aa51453ee`

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