Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9fff5b1b1d68c3a…

MALICIOUS

PDF

45.2 KB Created: 2021-05-31 04:56:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 3b4f0c779ed2551614222ffabc285454 SHA-1: db2030d0a9dc287cb6d2647cb2249de0f87f77aa SHA-256: d9fff5b1b1d68c3aa2854da309e285f75fcd5f81efb71e7b68ec345a268309fa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game items or hacks. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The document's content and embedded links strongly suggest a social engineering tactic to drive traffic to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9580

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-free-minecraft-skins-game-hack In PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/minecraft-education-free_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-college-textbooks-tiktok_GM835599320.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-robux-codes_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/best-free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://acasm.org.au/wp-content/uploads/fsqm-files/roblox-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_003_off000054dc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54DC 25600 bytes
SHA-256: e4ac73c5ff13cf9f1d298b4ee7368ada5b9e421bbe56a502690968bd73fddd6d
font_01_sfnt_off00008e85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E85 18044 bytes
SHA-256: 2e9033515f3ff21116dec08c3b5b633a0403805954c28c410ec38fa0176f1df4

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