Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be11cd008a3067b…

MALICIOUS

PDF

38.4 KB Created: 2021-05-21 06:18:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9806ea9788154fcd61e5452b2a89b0fc SHA-1: 59186c3a0a6cc4cf83cda279b2b93c4f305b770d SHA-256: 6be11cd008a3067b768267bc768e4d964ca31ac99770456b126898f9ca3060fe
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a call-to-action button designed to trick users into clicking on lures for free game currency or items. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document body and heuristics confirm the malicious redirection and lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

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/835599320/free-tiktok-fans-game-hack In PDF document text
    • http://mbbs.hr/files/i-didnt-get-my-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/free-outfits-roblox_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • https://mbbs.hr/files/pokemon-go-free-007_GM1094591345.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002fb6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2FB6 27108 bytes
SHA-256: de32622006afa56021f95149fb43c1290639a2b1321e5689a6c017852c08e102
font_01_sfnt_off00006c4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4E 2940 bytes
SHA-256: eb230542719c96b42e3fd8bb01e35f13ebd5f02629049da3a58e7fd7607bf48a
font_02_sfnt_off0000765d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x765D 17684 bytes
SHA-256: 9a08de3b0af5ab49577e5f4245d13b378d625872d2828bf675c34a9d6b9d0b04

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