Malicious PDF — malware analysis report

Static analysis result for SHA-256 92afb9e398d4d7f3…

MALICIOUS

PDF

42.0 KB Created: 2021-05-11 12:40:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 0a8b0b56cb4bcc500256c015be7a9672 SHA-1: f478705429221d9cc84006678cea7307c2730bf1 SHA-256: 92afb9e398d4d7f39c518e968657b5a0ff35838646ee7c74f345d99622cbc900
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that are flagged as malicious redirectors, specifically promoting 'game hacks' and 'free generators'. The primary lure appears to be related to Roblox and Coin Master, aiming to trick users into visiting these sites. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious redirection chain, likely leading to a second-stage download or exploit.

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/431946152/how-to-hack-roblox-accounts-for-robux-game-hack In PDF document text
    • http://itc-nekretnine.hr/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/free-robux-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/wurst-18-9_GM479516143.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-discord-servers_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/todays-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • https://www.itc-nekretnine.hr/files/roblox-devil_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coins-master-hacks_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://itc-nekretnine.hr/files/roblox-generator-no-human-verification_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.

FilenameKindSourceSize
stream_003_off0000489f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x489F 24488 bytes
SHA-256: 5ee873a7005c4202368dd62988e7624df127c6972e9fa007ed8d2a1423a08794
font_01_sfnt_off00008022.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8022 18756 bytes
SHA-256: 937dc084e295f5db9e9abf98e8d9ece9a75bef1f1a22520950dbcf80e1ec543e

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