Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d03314f22f99d9…

MALICIOUS

PDF

50.3 KB Created: 2021-06-03 07:36:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 438800c41ddb50860a978ae1f8497e31 SHA-1: 829dba78bdb3f323cae022e919c36fc5282eb3f6 SHA-256: e3d03314f22f99d90c5cdbdc3ef0efc6d04fa98d71ae73ab3e476be7e3c0be81
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple links to known malicious redirectors and SEO link farms, masquerading as 'free generators' or 'game hacks'. The primary malicious URL identified is https://netcdn.online/app/479516143/is-windows-10-minecraft-free-game-hack. The document body and embedded links suggest a social engineering lure to drive traffic to potentially malicious websites, likely for further malware delivery or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/479516143/is-windows-10-minecraft-free-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-do-i-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/tiktok-free-folowers-jio_GM835599320.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-lovenet_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/do-you-get-windows-10-minecraft-for-free-with-java_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-xyz-download_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
stream_004_off00005520.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5520 29204 bytes
SHA-256: e5b4d80b077d56dacfeb5b1450d06a64ab43808337748decf2617bda92d043cf
font_01_sfnt_off0000972e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x972E 2880 bytes
SHA-256: b053084cafd01c649462d87667ba56c569d6480ce60e7d20ae57ef6124cf178e
font_02_sfnt_off0000a119.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA119 18524 bytes
SHA-256: 171145d693b5cd868e8a770b6e84adad06c35cb86194a4ae2474cf18c95c1c24

Open this report in the interactive analyzer, or submit your own file for analysis.