Malicious PDF — malware analysis report

Static analysis result for SHA-256 e779f34a215c748b…

MALICIOUS

PDF

45.1 KB Created: 2021-05-19 11:34:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 0ce8c2a1c34497a4d6f7f58659ee0e0b SHA-1: 67b914376f953909bfe7ec1c1474bae67722af22 SHA-256: e779f34a215c748bfd589f59a2bf93de3fb989f533ab88406e94ad71087f25e1
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting "robux hack" lures. The document body and heuristics indicate a social engineering attempt to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/431946152/robux-hack-no-human-verification-game-hack In PDF document text
    • http://www.danzamaniapergine.it/images/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/free-promo-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/wurst-115_GM479516143.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/coin-master-hack-spins-app_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/download-coin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/june-29-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://www.danzamaniapergine.it/images/coin-master-spin-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000491c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x491C 25116 bytes
SHA-256: d167739387e54806aa987ec25e1051d4988c51a48435ad988cedb6947296f370
font_01_sfnt_off000081f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81F6 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8BA5 18868 bytes
SHA-256: 8c41f3ed2032476b4a245afad5cd23074bff3a00c17c7f8f9be8353034b253b9

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