Malicious PDF — malware analysis report

Static analysis result for SHA-256 5536524dbe0807f5…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 04:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 88619edefc2116c044d6a644ce494325 SHA-1: cfaa1c7e6efad67e7918422284c1b4fbc1f08407 SHA-256: 5536524dbe0807f5552884deb14c5813d2fe6138831f004c99f41a7c33544e62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game-related content to trick users into clicking malicious links. The embedded links, such as 'https://netcdn.xyz/app/479516143/how-to-get-minecraft-for-free-ios-game-hack', are identified as malicious redirectors. The document body and numerous extracted URLs reinforce the theme of exploiting game-related desires to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/479516143/how-to-get-minecraft-for-free-ios-game-hack In PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/robux-only_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/static-moonactive-net-rewards-2021_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-do-you-get-free-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-card-hack_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
font_00_sfnt_off00004f2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F2E 25512 bytes
SHA-256: 105e58c8fe4980f1d57238dc3a9d83269cf8c76369876e18ec4f8c6c5133d762
font_01_sfnt_off000088b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B8 17872 bytes
SHA-256: f310131035db742f338f230ab2c5697c5d59cc25d8943e3e3339342bb09010ba

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