Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a4df07ba0187b4…

MALICIOUS

PDF

43.2 KB Created: 2021-06-03 08:04:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d01273eef8b0b5aef83deb2a8615f1e5 SHA-1: 6a7514efb62a04e2543ba8d4d4cbd6fff2047118 SHA-256: 43a4df07ba0187b4ab3de6c1b9535ec47583d6a5ca1e6c1114e649355eaafa52
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a malicious domain, identified as a lure for game hacks or generators. The heuristic firings indicate the PDF is designed to trick users into visiting a known malicious redirector. While no scripts were explicitly extracted, the nature of the PDF and its embedded URLs suggest an attempt to deliver a second-stage payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/gold-cards-coin-master-hack-game-hack In PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-minecraft-java-edition-account_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spin-whatsapp-group_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/dinero-infinito-en-bloxburg-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-free-download-mobile_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/minecraft-free-download_GM479516143.pdfIn PDF document text
    • http://library.atim.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://library.atim.ac.id/repository/june-29-coin-master-hack-no-human-verification_GM406889139.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_004_off0000508f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x508F 24076 bytes
SHA-256: f24fa6dead5409915deed4e20ac3cfdd046e3d8e88ced74dfbc1f7cbf5c99453
font_01_sfnt_off00008701.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8701 17964 bytes
SHA-256: 5e7e042928fe04657102bb84442be0bc4eaf21c7bcdf31e92a05fff18f488254

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