Malicious PDF — malware analysis report

Static analysis result for SHA-256 94644bae11905932…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 20:06:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5e3931ec213312a564f4a1ea81231006 SHA-1: c6b5b99457931970e8cd13336e6412f29b79b0dc SHA-256: 94644bae11905932de532ab5462f61b63b9999617875f20cd7230b18f3623560
160 Risk Score

Malware Insights

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

This PDF document employs a lure for free game hacks and Robux, directing users to a known malicious redirector. The document body contains obfuscated text and multiple URLs, including the primary malicious redirector. The ML classifier strongly indicates maliciousness, and the presence of redirector links suggests an attempt to download further malicious content or lead users to phishing sites.

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/how-to-get-free-robux-website-game-hack In PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-free-downloader-igg_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/atticus129-roblox-hacked-image_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/roblox-adopt-me-hacks-2021_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/roblox-speed-hack-check-cashed_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-roblox-account-genrator_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id//repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/javascript-free-robux-pastebin_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/strucid-aimbot_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/best-roblox-hacking-software_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/vechle-simulator-roblox-hack_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-by-roblox-robloxcom_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/minecraft-116-free_GM479516143.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/what-is-the-best-game-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-robux-hack-2021-pastebin_GM431946152.pdfIn PDF document text
    • https://katalog.smkn1glagah.sch.id/repository/free-spins-coin-master-hack-2021_GM406889139.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_off00002fdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FDD 22432 bytes
SHA-256: 427084a74852cac10e2e80a7d4b9caaf8120ead6e522afddcc440c64f74ce332
font_01_sfnt_off000061c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C4 19304 bytes
SHA-256: c93debd830b422eae21ec10a608c2d09d6fed7207bb4c45cee900aa0b721bbbd

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