Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f242afabd3f9963…

MALICIOUS

PDF

34.5 KB Created: 2021-07-05 21:09:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 19c428e23fb50fa3ed79676b004edcff SHA-1: 64cf07aa11ce27e1c9e200134f76385619d3ff57 SHA-256: 7f242afabd3f9963e04daaad72648833470b9b7fb2011d63da8925a93b9bdadd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and sites offering game hacks, indicative of a phishing or malware distribution lure. The document body explicitly mentions 'How To Get Free Roblox Badges' and includes the malicious URL, reinforcing the lure. No scripts were extracted, but the presence of embedded URLs and the nature of the lures suggest a phishing attempt to trick users into downloading further malicious content.

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/431946152/how-to-get-free-roblox-badges-game-hack In PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-hack-unlimited-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/script-roblox-pet-simulator-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-gift-card-10-25-50-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/guardian-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/coin-master-20-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/comment-utiliser-les-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://library.sman1berau.sch.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.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_off00002e73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E73 22996 bytes
SHA-256: b018c22bf1f5901786a9e2e11d153102c903f17ff8e9ad073643175c57329d1f
font_01_sfnt_off00006227.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6227 18908 bytes
SHA-256: 42fd84ac65a816d64d8c0bb507de4b027720ee705c6ec61ba9604a8e8d3023f3

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