Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a4e71f2f28e1d56…

MALICIOUS

PDF

42.9 KB Created: 2020-08-31 17:10:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b90239c040de0ac79789451886dbb47 SHA-1: 23679f3061bb04a35fe963f0fda847cae9fbf702 SHA-256: 6a4e71f2f28e1d56f371a970df4f5b795fc2792f14f6951206837c16f93ef325
174 Risk Score

Malware Insights

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

The PDF contains numerous links, including one to a known malicious redirector, disguised as nutritional information. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' and the embedded URL strongly suggest a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of malicious intent, likely to redirect users to a compromised site or phishing page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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 https://ttraff.cc/wix?keyword=cafe+rio+menu+nutritional+information
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/0564/8801/files/wivizevalonedapapup.pdf
    • https://cdn.shopify.com/s/files/1/0431/2802/9345/files/chili_s_job_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0430/2559/6573/files/setusipadoma.pdf
    • https://cdn.shopify.com/s/files/1/0448/5660/6881/files/fivuvemawobox.pdf
    • https://static.usrfiles.com/ugd/b8c837_4e1ad306dfcd4c7594ba4964ccb577ec.pdf
    • https://static.usrfiles.com/ugd/67e251_d24e81d8ce3d4840a6941511d1cfc70c.pdf
    • https://static.usrfiles.com/ugd/c4ccc4_c2e3077d958f4240906108b53da17c05.pdf
    • https://static.usrfiles.com/ugd/9e53d4_0043b0b9715b4dbdadc242671db96a31.pdf
    • https://static.usrfiles.com/ugd/b8c837_c9a46efa61334b1a8f11765b61ed0241.pdf
    • https://static.usrfiles.com/ugd/b8c837_183ff3b8f036422a9c7b091658ea9997.pdf
    • https://static.usrfiles.com/ugd/b27199_0294c96145124471a6de6d73943221aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_f8d5a0d320d74fe3a77e16583bf1b600.pdf
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006227.bin
9ec3b6a2cb47fcf9abc9683927d9e4d29a7b308f1ddab3ca3c1a972bc2c55d82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6227 4640 bytes
font_01_sfnt_off000071d4.bin
70b5b8e6d8b098ab923391f56102092ca0bcce1d814461cc818221d19b7878b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D4 14304 bytes

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