Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb082dc9eaf69bf2…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 11:38:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 2009f6907f6c13e6834fc13f2da14250 SHA-1: 65cf1bd7b3e4cb26a391e4554a34658b2df05f4e SHA-256: bb082dc9eaf69bf29c8155e32ab449a49278e9b5b37696fa947f03f95e35539c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to known malicious infrastructure, specifically advertising game hacks and free generators. The heuristic firings indicate that the PDF is designed to lure users into clicking these links, which likely leads to further malicious content or downloads. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a phishing or scam attempt.

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/406889139/hack-spin-coin-master-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/links-to-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-how-to-get-free-robux-without-bc_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-adopt-me-hack-all-items_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/creator-hack-script-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-key-free-spin_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/blox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-money-hack_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_off0000309e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309E 22924 bytes
SHA-256: ff0dcb24c85fe5cc9780420ef19b2988e32bd75384e64ba655b5eec7a8f96ef1
font_01_sfnt_off00006428.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6428 18180 bytes
SHA-256: 5cfedaf359300f2d78c418cab4259cb31a5fa1e14dd5a50147ba7c045b472e8a

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