Malicious PDF — malware analysis report

Static analysis result for SHA-256 026869d152a14691…

MALICIOUS

PDF

33.8 KB Created: 2021-06-30 07:08:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: ac89faf7f9699223fc437d0b4f6f530a SHA-1: 6701c5c0b9439e37c89d696cde450ebdad7bf1e6 SHA-256: 026869d152a14691151c6148b36180bb81093ba39c424adf7421ebf14ceffebb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external resources, including a known malicious redirector at http://netcdn.co/app/431946152/como-hackear-assassin-en-roblox-2021-game-hack. The document body and embedded URLs suggest a lure for game-related cheats or hacks, which is a common social engineering tactic. The presence of a malicious redirector indicates an intent to lead the user to potentially harmful content or further malware downloads.

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/431946152/como-hackear-assassin-en-roblox-2021-game-hack In PDF document text
    • https://lib-stie.yai.ac.id/repository/krnl-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-booga-booga-download-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-give-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-with-console_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-robux-credit-card_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-a-roblox-hat-for-free_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-jailbreak-exploits_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/como-me-hago-hacker-en-roblox_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-free-shirts-and-pants-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • https://lib-stie.yai.ac.id/repository/roblox-playerexe-free_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_off00002e50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E50 21692 bytes
SHA-256: a69581e4235ea096913c8edcd8ee399d1506953f5b593624504301028e1dcbbb
font_01_sfnt_off00005ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DED 19436 bytes
SHA-256: ba826c693bd7ae4aec27ffbb6105aa87d702a97a88dcdb64facfdddfa74760e7

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