Malicious PDF — malware analysis report

Static analysis result for SHA-256 d86ab6ac813bd347…

MALICIOUS

PDF

35.4 KB Created: 2021-07-06 12:51:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cac9eb1da0ef1728fc22fa7b1ab7797b SHA-1: ab845aed9d5698c1400c7be72bc9aada9ab369f1 SHA-256: d86ab6ac813bd347c2c015071ade724edf5450ed3a78648f58cfdb0a02d50b94
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising free game hacks and currency. The document body and extracted URLs reinforce this lure, suggesting the primary goal is to redirect users to potentially malicious websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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/roblox-hair-for-free-game-hack In PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/robux-hack-me_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/free-roblox-accounts-with-robux-no-pin_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/best-free-items-in-roblox_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-daily-spin-free_GM406889139.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/como-hackear-coin-master-gratis_GM406889139.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/tiktok-free-real-fans_GM835599320.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/robux-hack-image_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/mod-pack-for-free-for-roblox_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/cheat-codes-for-vehicle-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/roblox-jailbreak-wall-hack-download_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://ie.itk.ac.id/asset/backend/upload/ckeditor/files/how-people-can-get-hacked-in-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off000035b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35B1 22044 bytes
SHA-256: 806a97048868105b297c372b174d38ee00bb4ba973681538e16c63cc61fee108
font_01_sfnt_off00006631.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6631 18768 bytes
SHA-256: 67cec84550cdb86e68db5be5ec4c905c8890b12f15e795b73abd73f3deb80b50

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