Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d047434a44938c7…

MALICIOUS

PDF

159.1 KB Created: 2020-05-15 23:06:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fc5792f31f2e02f6894396f6e51a4a74 SHA-1: ebfad2778763488724ea9e382d57fb69542a3982 SHA-256: 7d047434a44938c73b868fd5bacc6c5372291995cbd82999e9afb6dc3bb68701
76 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URL that points to a page designed to harvest credentials or abuse multi-factor authentication. The ML classifier strongly indicated maliciousness, and the heuristic firings support a phishing lure. No scripts were extracted from this sample, but the presence of external URLs suggests a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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 http://richkane.biz/uploads/1/3/0/7/130775354/130775354.html#tf2+pyro+guide
    • http://rockyjohnsonlaw.com/uploads/1/3/0/6/130621052/2db782c97f3.pdf
    • http://fitissexy.net/uploads/1/3/1/4/131483265/9384179.pdf
    • http://missturquoisecircuit.com/uploads/1/3/1/0/131070291/worok_kaxasigupodi_powavakafi_dusamibefote.pdf
    • http://your1stopwedding.com/uploads/1/3/1/3/131383864/85eff59ea74c7f.pdf
    • http://middlebloom.com/uploads/1/3/1/3/131381471/820619.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00024b71.bin
24c89ff21f17be3363ace36d02f71ced420bea090d2eed8af39680953a038d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24B71 11172 bytes

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