PDF malware analysis — malicious · dd849f42b36c4e76

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 00:08:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: c60955138ecfd4beac7811c415001993 SHA-1: 348d9f98ae47d64884969f71a9aa37cab2bcc280 SHA-256: dd849f42b36c4e76d2d7466d4d77f3480fe3a9408e1a96206da213dd13723891

260 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains numerous links, including a primary redirector URL associated with game hacks and free generators. The presence of a fake CAPTCHA heuristic indicates a social engineering tactic to prompt user interaction with these links. The document likely serves as a lure to drive users to malicious websites or download potentially unwanted or malicious software.

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.
Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA

Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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-free-download-iphone-game-hack In PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-roblox-shirt-templates_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-code-no-verification_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-deadcores-in-labyrinth-roblox_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/pokemon-go-free-candy-cheat_GM1094591345.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-hack-com_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-get-free-roblox-glitch_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/hack-coin-master-with-lucky-patcher_GM406889139.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/hack-roblox-accounts-pastebin_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/how-to-use-script-on-roblox-hack_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-safe_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/free-robux-money-adder-apk_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/roblox-proxo-hack_GM431946152.pdfIn PDF document text
- http://kpu-badungkab.go.id/new/public/ckfinder/userfiles/files/hack-master-coin-pc_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_off000032bf.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x32BF	22540 bytes
SHA-256: `2d2a54ead103872cf1d48e7eaa07776911fc4aa3d9e88fda96c52d6d0aca0e0b`
`font_01_sfnt_off00006511.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6511	18920 bytes
SHA-256: `e079d7855c4dbce270202aef793088cce0f572f0ad36a45d6e5372222445917a`

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