Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ef16826789b94a0…

MALICIOUS

PDF

34.3 KB Created: 2021-07-05 16:14:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9ea4993587cde27c8033d9365ee30559 SHA-1: 1c32b99981b1b6a1eb72236c21643dbdd6ac86b1 SHA-256: 6ef16826789b94a06d2cd98234c9a4ac05238145bdf775a93743ef1b8b952116
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a document body that advertises game hacks and cheats, strongly suggesting a lure to download malicious content. The ML classifier also flagged this PDF with high confidence. The primary attack pattern involves tricking users into clicking malicious links disguised as game cheats.

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/431946152/robloxcom-hack-free-robux-game-hack In PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-fly-hack-in-roblox-phantom-forces-2021_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/cheat-roblox-elemental-battlegrounds_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/tiktok-free-to-download_GM835599320.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-plus-ultra-hack_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-make-a-free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-kostenlos_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-robux-username-only_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-script-to-hack-into-an-accont_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-spins-for-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-free-robux-hack-on-ios_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-sketch-roblox-hacked-client_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/play-roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/free-roblox-no2-copy_GM431946152.pdfIn PDF document text
    • http://library.acehresearch.org/repository/roblox-hack-stopped-working_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002dda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DDA 22676 bytes
SHA-256: 1366cfada128329b96641ae7be3ba088f699d6436c44408d054fe59a071edbd8
font_01_sfnt_off0000608c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 19220 bytes
SHA-256: 22cc1307a91b7b7f59f2858f41a3a26c220e3da9939b5387d814351b03b9fa60

Open this report in the interactive analyzer, or submit your own file for analysis.