PDF malware analysis — malicious · 3c14a74f86a67fcf

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 11:17:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24

MD5: 2fb8410a0d2c9fcf9203c6681bd77063 SHA-1: de9edc36d1ef3f3057ac2abf3112dfe6d01d9120 SHA-256: 3c14a74f86a67fcf3ee041766143368d48877a875547d928661d6cdb2a0f162b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that advertise game hacks and generators, with one link identified as a known malicious redirector. The document body explicitly mentions 'Coin Master Hack Apk Ios Download' and includes a URL pointing to a 'coin-master-hack-apk-ios-download-game-hack' resource. This suggests the document is part of a phishing or malware distribution campaign, likely using a spearphishing attachment as the initial access vector.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-master-hack-apk-ios-download-game-hack In PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/hacks-game-in-roblox-prison-life-download_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/hack-de-coin-master_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/roblox-free-robux-adder_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/roblox-ftw_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/coin-master-free-spins-usa-2021_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/roblox-com-for-free-robux_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/robux-free-online_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/free-coin-master-coins_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-get-a-shirt-for-free-on-roblox_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/free-roblox-website_GM431946152.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
- http://multiconfianca.com.br/ckfinder/userfiles/files/how-to-fix-a-hacked-roblox-game_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_off00002fde.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x2FDE	22452 bytes
SHA-256: `cc5185c0ca06ee8c35674ca4094acbe0144b0901c176e22dc38fc7910560af20`
`font_01_sfnt_off000061cc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x61CC	18760 bytes
SHA-256: `38610b9978a6d602fbc41685ad0ae40442350b3c21ae0be27d2d81fd40d33c9e`

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