Malicious PDF — malware analysis report

Static analysis result for SHA-256 485330a74fccd95e…

MALICIOUS

PDF

41.3 KB Created: 2021-05-21 21:18:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 48db9baf299f4f5de519b11bb564ce06 SHA-1: 5966e70828ef2f4f4ee09a9d0be6e6aa1b5228fa SHA-256: 485330a74fccd95eb82cac0e0338de0139d05d349e45a33471cfe78438de55ce
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a prominent call-to-action to download a 'Roblox Army Free Robux' generator. The heuristic 'SE_MFA_LURE' indicates the document also attempts to harvest multi-factor authentication codes, suggesting a credential harvesting or account takeover motive. The ML classifier also flagged the PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8074

Heuristics 4

  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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.xyz/app/431946152/roblox-army-free-robux-game-hack PDF link annotation
    • http://italianconnectionsleaford.co.uk/images/free-roblox-codes-2021_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-minecraft-printables-food-labels_GM479516143.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://italianconnectionsleaford.co.uk/images/coin-master-free-cards-link_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_002_off000035de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35DE 27732 bytes
SHA-256: 2bf8893e60579bdeeeca0cd3f193e21a3f9d77931ad6d6d8f7a86ba066f6ccd8
font_01_sfnt_off000072cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CC 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off00007f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F73 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3

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