PDF malware analysis — malicious · 5193b889dd868f52

MALICIOUS

PDF

42.2 KB Created: 2021-05-11 15:40:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21

MD5: 2ab4d5120467ada596d55476a5f78398 SHA-1: b43f4468c85bedbc63a465622bce8f311dc19a91 SHA-256: 5193b889dd868f5278df487d0d5a5218f9ba71ff62574c7effd1f05e28e657dc

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, using a 'game hack' theme to entice users to click on links. The embedded links redirect to known malicious infrastructure, indicating a phishing or malware distribution attempt. Although no scripts were directly extracted, the PDF structure and embedded links strongly suggest a malicious workflow, likely involving the download of a secondary payload.

Machine Learning

Nyx PDF Classifier malicious score 0.9971

Heuristics 4

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.
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/479516143/minecraft-bedrock-edition-hacks-game-hack In PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-minecraft-client_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/earnrobux_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-free-play-no-download_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-handbook_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-gain-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/www-rbxhut-com_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-for-free_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/free-robux-real_GM431946152.pdfIn PDF document text
- http://www.behikeyacht.com/new/public/ckfinder/userfiles/files/roblox-studio-free-robux_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_003_off00004ba7.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x4BA7	24588 bytes
SHA-256: `85c05a5878641ab107a4891647502634e63c95206b303ae686b25994ef2b7c71`
`font_01_sfnt_off000082d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x82D3	18268 bytes
SHA-256: `ab11a404ecd1e05d7423e813f114c97ddc1b622607c5cfcfecdb5803810a7c8b`

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