PDF malware analysis — malicious · 93623beef971256a

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 13:43:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25

MD5: 37018802322555c7bc69c7d59dfae492 SHA-1: 4b7bd759da5614b12b4a05947ef939de1bbd20b9 SHA-256: 93623beef971256a0e0c4c9928f3291f7e1736c12c510f433e2e4e69e4ba498d

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically http://netcdn.tw/app/406889139/blogspot-free-spins-coin-master-game-hack. The document body and embedded URLs suggest a lure for game-related cheats or currency, a common tactic for phishing or malware distribution. The presence of multiple redirector links indicates a high likelihood of further malicious activity.

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/blogspot-free-spins-coin-master-game-hack In PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/how-to-add-mods-to-minecraft-pe_GM479516143.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/pokemon-go-free-coins-code_GM1094591345.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/how-to-cheat-in-roblox-jailbreak-fast-run_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/how-to-hack-roblox-for-robux-on-ipad_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-btools-roblox_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/android-coin-master-hack-2021_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-hair-advance-roblox_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-roblox-accounts-and-passwords-2021_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-likes-for-tiktok_GM835599320.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/hack-coin-master-app_GM406889139.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/make-robux_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/roblox-hack-robux-and-tix-download-free_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/minecraft-free-demo_GM479516143.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/speed-hack-tool-roblox_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/real-free-robux-codes_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
- http://www.dallahgrp.com/uploaded_files/userfiles/files/minecraft-free-apk-download-016-0_GM479516143.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_off000033d3.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x33D3	23160 bytes
SHA-256: `eb09dc951976f6a61d3e76e6cf410272c3c335ad72ba0bb7f7f4a804f3bcf3ed`
`font_01_sfnt_off000067ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x67FF	18464 bytes
SHA-256: `230ca97f16dd2ddf1879142f15263642e6919db147f0bcf840325c8143f28d8e`

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