Malicious PDF — malware analysis report

Static analysis result for SHA-256 f579fcdf88ed4734…

MALICIOUS

PDF

44.6 KB Created: 2021-06-11 00:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 21ad3ab32627a1c86a730eab9f0f54b8 SHA-1: ad115753d021b83b473757555e119aae8d9ccc1c SHA-256: f579fcdf88ed4734eb00f41d4d0052978aa91c9b43d60f8308fd20b302a726d4
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links and a call-to-action phrase, strongly suggesting a phishing or scam attempt related to game cheats. The PDF_SEO_LINK_FARM heuristic indicates a large number of external links, likely to SEO-farmed content designed to attract users searching for game exploits. While no scripts were directly extracted, the PDF structure and embedded links are indicative of a malicious lure, likely leading to a download or further phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/roblox-hack-generator-no-survey-game-hack PDF link annotation
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/hack-roblox-online_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/hack-coin-master-apk-ios_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-every-ten-seconds_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/rbxfree-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/roblox-hack-2021-forum_GM431946152.pdfIn PDF document text
    • http://library-fkip.uho.ac.id/repository/coin-master-free-spins-link-no-verification-2021_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_004_off00005385.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5385 23900 bytes
SHA-256: 584e68ca2e4be45f783622af7f05fac7ec5681969b2707b1d101071516ded7e6
font_01_sfnt_off00008a1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A1A 18720 bytes
SHA-256: 2688c267c2e4caea80973edaede0d6c6a10fae4b170209e10af31f130176955a

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