Malicious PDF — malware analysis report

Static analysis result for SHA-256 c679a58476d077f8…

MALICIOUS

PDF

47.0 KB Created: 2021-06-08 16:04:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f85f542323c63b6cf1e71f3103b0b422 SHA-1: 748d31cf42e45f6d61dc83da345a38e7c683b5b4 SHA-256: c679a58476d077f8297a677ac6195344c93a74fdc33e3a3fbbdcdfd02947b661
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded URLs and a heuristic firing for brand-impersonation credential phishing, specifically impersonating Apple and luring users with 'free Robux'. The primary URL, https://netcdn.tw/app/431946152/how-to-hack-robux-with-cheat-engine-6.3-game-hack, is hosted on a domain unrelated to the impersonated brand, indicating a likely phishing or malware distribution attempt. No scripts were extracted from this sample, but the presence of malicious links and the phishing lure strongly suggest a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

Heuristics 4

  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.tw/app/431946152/how-to-hack-robux-with-cheat-engine-6.3-game-hack.
  • 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/how-to-hack-robux-with-cheat-engine-6.3-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/pokemon-go-free-zip_GM1094591345.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-2021-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-game-free_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-svg-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-scripts_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-free-account_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_off0000528a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x528A 27536 bytes
SHA-256: 4af86b460c0a4a43bbdd46a80c6e5852b764683a7692b42ce9736267a53b35f2
font_01_sfnt_off0000911c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x911C 19696 bytes
SHA-256: bea3844d81f698798c7c2f507e0d905d5891da92df8a63fd5702044c3533aff5

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