Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f9ead639e67bede…

MALICIOUS

PDF

44.1 KB Created: 2021-05-10 18:17:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: ea8ecd9bfca0c2c33a61446a2130d85e SHA-1: dff8804aea881c2c579703173eb95c5071fa1c35 SHA-256: 2f9ead639e67bede836bdbd968b50c4152471769ce3e67f56e5e439acb20a246
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and free spins. The document body and embedded URLs indicate a lure for potentially unwanted or malicious content. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a redirection to a malicious site, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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/406889139/best-free-spins-for-coin-master-game-hack In PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/minecraft-diamond-finder-hack_GM479516143.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/give-me-robux-now_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-hack-without-verification-or-downloading-apps_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-robux-images_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/hack-game-coin-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://srisaket.nfe.go.th/UserFiles/File/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000512a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x512A 25140 bytes
SHA-256: 42180d1243b3f9904f543d74eb5bff0e983597ba1ade61cf06971ac5b4e1afb8
font_01_sfnt_off00008aee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AEE 18104 bytes
SHA-256: 265810a533179ed4911351fbf1b80b3cb768f85036b1ca3bcdd0395585e16b03

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