Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b468f56157b38e6…

MALICIOUS

PDF

35.7 KB Created: 2021-06-24 12:22:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a3522cde044bf7b54d81cb08eed76f6b SHA-1: 66ed7aaa3b13a79c4f700ece74a1b81ed6def195 SHA-256: 0b468f56157b38e65c9cc47240b8e765c8b4fa35c32781150912a9d4bd561037
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors, specifically advertising 'free generators' or 'game hacks' for popular games. The primary malicious URL identified is http://netcdn.co/app/835599320/tiktok-free-quotes-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering lure to trick users into visiting potentially harmful websites.

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.co/app/835599320/tiktok-free-quotes-game-hack In PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/downlaod-fly-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/discord-servers-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-roblox-exploits-2021_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/free-robux-without-offers_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-free-robux-hack-script_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smkpgri2bdg.sch.id/new/public/ckfinder/userfiles/files/giving-away-free-robux-cards_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
font_00_sfnt_off00003463.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3463 23212 bytes
SHA-256: 8caf2e5fa80131ea70d0d9bea7cb541b765c49eeaa54a1de9b41dbcd9e48822b
font_01_sfnt_off000068dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DD 18268 bytes
SHA-256: 40baefedd9231da0ae04ba69a6e83c9f5cd00a8ca3e3060977801d36f69fd119

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