PDF malware analysis — malicious · 0f3a6523be279322

MALICIOUS

PDF

34.8 KB Created: 2021-07-02 02:31:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: d59ea045543fccf183680b5a32f1f0c0 SHA-1: 72ea35d870f79bbe8b4ab96ad6301e380fc975ae SHA-256: 0f3a6523be279322c1a1abf1aa0e308a02a2ac81d822a392168c4e9848b4077f

240 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links disguised as game hacks and free currency generators, a common lure for phishing or malware distribution. The links point to a known malicious redirector and a large number of other PDFs hosted on an IP address, suggesting a link farm designed to attract users searching for cheats. The document's content and structure strongly indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 6

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.
Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL

PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
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/roblox-how-to-remove-your-head-for-free-game-hack In PDF document text
- http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-and-coins-group_GM406889139.pdfPDF link annotation
- http://111.68.26.74/widyapustaka/repository/how-to-hack-all-the-cargo-crates-in-roblox_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/roblox-summer-event-free-robux_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/hack-work-at-a-pizza-place-roblox_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/free-membership-codes-roblox_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/how-to-get-free-money-on-roblox-tycoons_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/free-robux-no-download-no-survey-no-verification-2021_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/roblox-phantom-forces-hacks-fly_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/how-to-insert-a-hack-script-into-roblox-game_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/free-roblox-clothing-2021_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/rblx-gg-get-free-robux_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/how-to-get-free-coins-on-flip-master_GM406889139.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/coin-master-apk-hack-download_GM406889139.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/roblox-pro-hack_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/fly-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
- http://111.68.26.74/widyapustaka/repository/how-to-hack-someones-roblox-account_GM431946152.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_off00002eea.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x2EEA	22536 bytes
SHA-256: `84b4b84afa9bf8417f1925a04a4757585d689c56cfbd655c2aa5f504293e9043`
`font_01_sfnt_off0000613b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x613B	19664 bytes
SHA-256: `8c0d57ed749d3db021dcf0149498ebd9d263f6e1a2fa079ad96ba0fb8cac62ef`

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