Malicious PDF — malware analysis report

Static analysis result for SHA-256 2132af235882230d…

MALICIOUS

PDF

42.7 KB Created: 2021-05-20 05:01:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 67005339db138ab2a03e7da6a458f654 SHA-1: 0807afc073f7a34ee11eaac859551e0807bdcc2d SHA-256: 2132af235882230d3046c590bd61692cd227e8451e1793c25c645f67a8a2757f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link disguised as a game hack generator, which is a common lure for phishing or malware delivery. The link points to known malicious redirector infrastructure, indicating an attempt to lead the user to a malicious site. No scripts were extracted, but the PDF structure and embedded URL strongly suggest a phishing or social engineering attack.

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/1094591345/pokemon-go-free-storage-upgrade-game-hack In PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/8bp-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-free-items-2021_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/is-minecraft-free-on-pc_GM479516143.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/free-minecraft-alt-accounts_GM479516143.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/free-roblox-wings_GM431946152.pdfIn PDF document text
    • http://www.st-michaels-lichfield.staffs.sch.uk/admin/ckfinder/userfiles/files/coin-master-daily-free-spins-link-today-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
stream_003_off00004a04.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A04 24668 bytes
SHA-256: fff00ddccf79a3ba4b8430b5be610c5e91fa97c1bd95e719c69f13df6ddfbb65
font_01_sfnt_off0000828d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x828D 19000 bytes
SHA-256: ae61603d77809907d322832142daec122e739208877d9990a37908046f01bc43

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