PDF malware analysis — malicious · f0339ed09062c15d

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 05:28:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13

MD5: 05479ed0881182ce8d597c72f7963102 SHA-1: 6bec4c4855f11d2ed97fca9a731842ba61f0ea1c SHA-256: f0339ed09062c15dbddf6538bb98e406f62a2e97e089b68a00c0fbd016694b6d

220 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on potentially malicious content, disguised as game hacks and generators. The document directs users to a known malicious redirector and a large number of SEO-optimized PDF links, indicating a link farm designed to drive traffic. The presence of a visual download button further supports the deceptive nature of the document.

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/406889139/coin-master-free-spins-hack-iphone-game-hack In PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/phantom-forces-roblox-cheats_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-robux-no-human-verification-no-offers-generator_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-roblox-accounts-dantdm-com_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox-ninja-dojo-tycoon-cheats_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-promocodes-that-give-you-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-free-robux-on-iphone-no-human-verification_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/roblox-elemental-battleground-hack-script_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-roblox-accounts_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/tycoon-simulator-hack-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-hack-roblox-for-admin_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-free-robux-zephplayz_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-free-stuffs-on-computers-roblox_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-free-robux-on-ipad-2021_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/free-robux-sites-that-work_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/download-hack-roblox-jailbreak-money_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/how-to-get-robux-without-paying_GM431946152.pdfIn PDF document text
- https://elearning.mtsn1enrekang.com/__statics/gudangsoal/files/da-hood-update-drum-gun-cheats-in-roblox_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
`stream_002_off00003280.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3280	22932 bytes
SHA-256: `b03609a78b748978bea3a1255cdb0cc9b63e9c83d5bed12d65bef54ff16b9462`
`font_01_sfnt_off000065c7.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x65C7	18512 bytes
SHA-256: `f42da8955ac0b14df7498282519dbf61ee386aa1420e52cc2fe2324e7f413181`

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