Malicious PDF — malware analysis report

Static analysis result for SHA-256 06426d149f90f660…

MALICIOUS

PDF

41.8 KB Created: 2021-05-17 19:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 3793f4cdfe721e21008836c106043d79 SHA-1: 52aacb77ec20e89ec7af9e52866c2d446b5b331c SHA-256: 06426d149f90f66078cfb39ba3c79e7691cbcb0dc7cd164f8984ded998f7f5e4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting game hacks and generators. The ML classifier strongly indicated maliciousness, and the presence of multiple links to known malicious redirectors confirms a phishing or scam attempt. No scripts were extracted, but the document's structure and embedded URLs suggest it is part of a social engineering campaign to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/how-to-hack-roblox-games-game-hack In PDF document text
    • https://ballaratcaravans.com.au/images/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-on-facebook_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/legit-coin-master-hack-october-2021_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/rewards-robux_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-ios-hack-download_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/youtube-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/freerobux-co_GM431946152.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://ballaratcaravans.com.au/images/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.micIn 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
stream_003_off00004825.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4825 24396 bytes
SHA-256: ca041d3bff1cb7bd02360ab986a3c9e4dd1abbd66790ff0bca0da253b1481d82
font_01_sfnt_off00007fd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FD7 18608 bytes
SHA-256: f0530f62cc2e234d68a11618bd0f649c02fcf1ebf2f14054a2e3aba439076e74

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