PDF malware analysis — malicious · cca386cb4c32b2d9

MALICIOUS

PDF

44.7 KB Created: 2021-05-20 05:56:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 067faf20593ce84ebaf68d5757480e43 SHA-1: 586001c25696b2c716c61bc8c1f1b598983255a2 SHA-256: cca386cb4c32b2d90f08fc623110833b54a9edc8d53c20c0f31afa94c32aec67

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generator' or 'game hack' lures. The document body and embedded links suggest a social engineering attempt to trick users into visiting these sites, which likely host further malicious content or phishing pages. No scripts were extracted, but the PDF's structure and embedded links are indicative of a downloader or redirector campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.9632

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/431946152/easy-robux-hack-game-hack In PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-robux-obby-2021_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-34-4-hack-download_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-support_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-robux-sites-2021_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-robux-website_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/50-free-spins-coin-master_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-spin-hack-pc_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://www.jetape.com.br/ckfinder/userfiles/files/free-spin-sites-for-coin-master_GM406889139.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_off0000454e.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x454E	26408 bytes
SHA-256: `be9b315de472d6a9a70df675209e9f1c182050572742cdd4afa78edd15fcd945`
`font_01_sfnt_off000081a3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81A3	2832 bytes
SHA-256: `77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2`
`font_02_sfnt_off00008b54.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8B54	18428 bytes
SHA-256: `2bceebe5c1993dbcd4316f947943b347169ed843d74f7d3766fe916d90107923`

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