PDF malware analysis — malicious · f6f449a749e67bf2

MALICIOUS

PDF

45.8 KB Created: 2021-05-18 00:10:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11

MD5: 765f0da13c3248ecaa1fcb11fe93c317 SHA-1: a5a4f9dfb188408fcd098a68004e4d61cf606322 SHA-256: f6f449a749e67bf28484cab4a3d9e9261e74c5c573032eb5059fe6479ae4191f

260 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including a known malicious redirector, that are designed to lure users into believing they can obtain game hacks or free in-game currency. The document body and embedded links suggest a phishing or scam attempt, potentially leading to credential harvesting or the download of further malware. The presence of MFA lure heuristics further supports a credential theft objective.

Machine Learning

Nyx PDF Classifier malicious score 0.9432

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.
MFA / one-time-code harvesting lure high SE_MFA_LURE

Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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.xyz/app/431946152/how-to-win-robux-game-hack In PDF document text
- https://loba.com.vn/public/upload/files/free-minecraft-hacks_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-without-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-hack-online-generator_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/hack-coin-master-apk_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/coin-master-mod-apk-latest-version-free-download_GM406889139.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/roblox-redeem-card-codes-free_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
- https://loba.com.vn/public/upload/files/try-minecraft-free_GM479516143.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_003_off000048a3.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x48A3	27656 bytes
SHA-256: `3e8e40b515e87c9bdb6e9fd5f081a01928767fc4d94e7a061ff947cbc5dcbdc1`
`font_01_sfnt_off00008666.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8666	2832 bytes
SHA-256: `77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2`
`font_02_sfnt_off00009016.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9016	18332 bytes
SHA-256: `fad00ab28ca32ac720175c1db428ad763f82292df9c4789472f562f51e00092f`

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