PDF malware analysis — malicious · eb56e18cc0def1d3

MALICIOUS

PDF

35.5 KB Created: 2021-07-08 23:14:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 928af3fc45dfba116ffcbcd83ef1aac2 SHA-1: 34ac5cf63b241bc623c1f7bfce63b407e260d846 SHA-256: eb56e18cc0def1d366b7fe12d7f3f1f39d3e1662c741680debfa1b41dd593282

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting 'game hacks' and cheats. The primary lure URL is http://netcdn.tw/app/406889139/how-to-duplicate-coin-master-spin-hack-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering attack aimed at tricking users into visiting malicious sites, likely for further malware delivery or credential harvesting.

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/how-to-duplicate-coin-master-spin-hack-game-hack In PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/indetectable-cheat-roblox-fly_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/tiktok-free-song_GM835599320.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-roblox-mod-apk_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/roblox-weird_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-by-completing-offers_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-robux-stealer_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-minecraft-java-edition_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-hack-strucid-roblox_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/fe-dll-hacks-roblox_GM431946152.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/how-to-get-free-followers-on-tiktok-without-human-verification_GM835599320.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/free-coin-master-spins-link-facebook_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
- http://www.hiddencanyonbejiguwang.com/assets/CKImages/files/c00kid-roblox-hack-gui_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_off00003368.bin`	decompressed-pdf-stream	PDF FlateDecoded stream at offset 0x3368	22896 bytes
SHA-256: `b2acd6432ce39515866d9e1449969a9f1080d1ad550ae6a519df3af5cdb13336`
`font_01_sfnt_off000066d4.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x66D4	18728 bytes
SHA-256: `a3fdb11da00729fba234c6415a747df032fafb4afd6d337c839e921ae43cfe99`

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