PDF malware analysis — malicious · 968ce10e5f60c0a6

MALICIOUS

PDF

42.1 KB Created: 2021-05-12 00:04:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07

MD5: 400a240bb0af227494f3e09df4db7036 SHA-1: 69ac60589a3dd066bb9294ba65bf6f5df34fe70f SHA-256: 968ce10e5f60c0a6a00b0cb0c36364b0872f5afc1574c24df4690a8e00d36891

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a critical link to a known malicious redirector infrastructure. The document body explicitly mentions 'Coin Master Daily Free Spins Hack' and includes a call-to-action, indicating a lure for users to download potentially unwanted or malicious content. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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/406889139/coin-master-daily-free-spins-hack-game-hack In PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/robux-hack-me_GM431946152.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/blox-supply-free-robux_GM431946152.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-free-spins-a2z-help_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/how-you-get-free-robux_GM431946152.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/robux-free-robux_GM431946152.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/roblox-download-pc-free_GM431946152.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/blogspot-coin-master_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/free-robux-human-verification_GM431946152.pdfIn PDF document text
- https://www.italisaitaly.com/uploaded_files/userfiles/files/coin-master-free-gold_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_off00004a89.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A89	24760 bytes
SHA-256: `46ab916c8bbfd5e0cde9adc570e98a95b983da02766ec1fcc1c31702450612a9`
`font_01_sfnt_off000081b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81B6	18476 bytes
SHA-256: `c2f5b1848ff169b31c97a42ada7a437145dc26f40c6d7c3b53e9420ed4832cc1`

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