Malicious PDF — malware analysis report

Static analysis result for SHA-256 07deb5225c2caa50…

MALICIOUS

PDF

27.3 KB Created: 2020-05-28 23:01:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a89f5b7ffb047eb9ced6be558a193329 SHA-1: d344d4aa3c5f3b6fb33a6894b4a795363d2b5aa3 SHA-256: 07deb5225c2caa50c084c2b7ba8593e74d21f54ff3f58f58fe6c83b1cc871663
124 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, many of which are part of a link farm, suggesting a phishing or malicious redirection attempt. The document body and heuristics indicate a lure related to invoices or payments, aiming to trick users into clicking these links. While no scripts were directly extracted, the presence of many external links and the 'ML_NYX_PDF_MALICIOUS' heuristic strongly suggest malicious intent, likely leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

Heuristics 6

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://destinedtodelighttravel.voyagerwebsites.com/uploads/1/3/0/9/130970023/130970023.html#bch.+org%252F+paymybill
    • http://mycoffeeblack.com/uploads/1/3/0/9/130969259/sipegopa-jogage-leregawotipanov.pdf
    • http://14centsaminute.com/uploads/1/3/0/2/130270804/vuwopozidu.pdf
    • http://akeetonbooks.com/uploads/1/3/0/4/130436188/pikukobekeno.pdf
    • http://tierrasantarp.com/uploads/1/3/0/5/130539657/1b56604ee7fe5.pdf
    • http://southerngirlcoffee.com/uploads/1/3/0/5/130538818/82531.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_off000042a3.bin
c25af7bc1d03c9b5119159bd45ee37bae8da817bb002c8906057663b829a9055		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42A3 9508 bytes

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