Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a5e2acde6b0f06…

MALICIOUS

PDF

35.9 KB Created: 2021-06-28 11:57:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 243c83d4050b326b12bd0ca059837a9c SHA-1: 0bf283c6cc230417ed6ea2a3815221e417c4525c SHA-256: 02a5e2acde6b0f0686fa13af886400a1bd1aa3a2649bb62939ce0e98fc325b69
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, including one to 'get-free-money-in-roblox-jailbreak-game-hack', and is flagged as a link farm and game hack lure. The document body also contains similar lures and embedded URLs. This suggests the PDF is designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/get-free-money-in-roblox-jailbreak-game-hack PDF link annotation
    • https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/how-to-get-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/free-robux-without-human-verification-or-survey-or-offers_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/hack-field-of-battle-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/how-to-hack-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/hacks-on-roblox-broken-bones_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/roblox-studio-are-datasotres-free_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/roblox-jailbreak-hacker-transparent_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/hack-roblox-online-no-survey_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/roblox-dino-simulator-kaiju-skins-for-free_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/roblox-color-name-hack_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/how-to-get-free-robux-insect-no-waiting_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/how-to-hack-in-the-void-booga-booga-roblox_GM431946152.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/minecraft-font-free_GM479516143.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/tiktok-followers-generator-free_GM835599320.pdfIn PDF document text
    • https://www.misceren.com/home/misceren/public_html/upload/files/robux-free-c_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_off00003339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3339 22724 bytes
SHA-256: 6a59b4c989ddb284cf996e77012e690b314273e352e1b7c065b426a397ab6f6f
font_01_sfnt_off000065cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65CB 19588 bytes
SHA-256: 157dabbad618b939ae2e703a06014a3e100ee96782c3304ea87f2d0ea8baae57