Malicious PDF — malware analysis report

Static analysis result for SHA-256 b12b2ecdb8968aef…

MALICIOUS

PDF

36.0 KB Created: 2021-06-28 13:02:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 047853221f6215439f57e04791be2533 SHA-1: ae1673d2d8fa9e8972950830c9f6a3e709c7a33b SHA-256: b12b2ecdb8968aef033b899a43f74d725a8fe23dd8b8e76e7dd2bdcf4590a266
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be game hacks or generators. The primary link leads to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or exploits. The document's structure and embedded links strongly suggest a phishing or scam attempt, leveraging popular game themes to entice clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.co/app/431946152/how-to-cheat-in-yin-vs-yang-ninja-assassin-roblox-game-hack In PDF document text
    • https://sanjoseelectricians.net/images/redeem-clde-roblox-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-millions-of-robux-for-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-cheap-hack-buy_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-multiplayer-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-sdcript-executer-for-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-developer-console-hack_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-make-free-shirts-on-roblox-without-bc-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-robux-no-hack-or-scam_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-hack-build-tools_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/minecraft-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-donload-for-free_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-how-to-get-hacked-account-back_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-apocalypse-rising-spawn-hack-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/paginas-para-hackear-en-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/attack-on-titan-project-hack-roblox_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/roblox-how-to-get-free-admin-on-jailbreak_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/how-to-get-free-obc-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://sanjoseelectricians.net/images/my-roblox-account-is-being-hacked-what-do-i-do_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
font_00_sfnt_off000033d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33D8 22540 bytes
SHA-256: f706160fd44fc2ddf36d688f2acda368e49130fa5ce4312824655a8ca8960100
font_01_sfnt_off00006637.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6637 19524 bytes
SHA-256: 8bb81b61eb174b5b5a7c28478a2f54002241fe47e97f0bae8a1705e87e06f3c4

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