PDF malware analysis — malicious · 068cfd25eeeb95c7

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 19:34:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23

MD5: da9a53779444763135a01fd3462bf169 SHA-1: 169b648a910e67bbb16c1d1ea4dfe578b791753d SHA-256: 068cfd25eeeb95c73e0322b4906f7d1b233be9f76107d3f92abd044dfe66036f

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be game-related hacks or cheats. The primary link redirects to malicious infrastructure, and the document body contains numerous other links to PDF files hosted on a seemingly unrelated domain, likely part of a link farm or SEO manipulation tactic. The ML classifier strongly indicates maliciousness, and the overall pattern suggests a phishing or redirection 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.tw/app/479516143/minecraft-hack-app-game-hack In PDF document text
- https://www.advancisveterinary.com/uploads/files/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/tiktok-free-online-textbooks_GM835599320.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/acount-hacking-roblox_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/code-cheat-roblox-pokemon-brick-bronze_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-hack-into-a-roblox-accont_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-system_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/best-level-7-exploits-free-roblox_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/crate-clicker-roblox-hack_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/roblox-hack-v6-5-free-download_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/robux-hacks-no-survey-or-verification_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-game-hack-app-download_GM406889139.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/free-roblox-followers-generator-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- https://www.advancisveterinary.com/uploads/files/files/coin-master-free-spins-app_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_off000033cb.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33CB	22636 bytes
SHA-256: `3a4e2af69616805000db90bffc9ee66debbf716c9ccfd6723ee75476dbfc4c6b`
`font_01_sfnt_off00006636.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6636	18204 bytes
SHA-256: `c1185779461864b36b9820a1fc6c8f9e9cb6b26e9ea910c27505907d0185e4b6`

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