Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83e40987a6fac5c…

MALICIOUS

PDF

43.3 KB Created: 2021-05-30 14:43:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 146ce9bd42b87d1ae39ddcfa55b951f1 SHA-1: 066d281f9f8df221b25d46b5c759dd2d1e4d7a78 SHA-256: e83e40987a6fac5c36d237693a9372258ea1b74c1b36e9a86998820c1a5f7a30
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks and generators. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click on these links, likely to download further malware or lead them to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9463

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/835599320/free-tiktok-like-game-hack In PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/is-minecraft-free-on-ps4_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/classic-minecraft-net-hacks_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-resource-packs_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/minecraft-java-edition-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/coin-master-free_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-app_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-followers-for-tiktok_GM835599320.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://ilya.ro/wp-content/uploads/fsqm-files/coin-master-free-link_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
stream_003_off00004f96.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F96 25292 bytes
SHA-256: c83b94433078a879fae652712a7c742a57ac7ea8f0597ff5df99dd92d986f07b
font_01_sfnt_off000088da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DA 17456 bytes
SHA-256: 2612e5e228ce8c424fcb3a100408051ce9a88b2c89e0201ab469a717737f635a

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