Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d72e5baa267aa17…

MALICIOUS

PDF

41.2 KB Created: 2020-09-11 11:10:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b259d0e76def834369f9c6e879c9702 SHA-1: eb0d04035dac09068d5f1591c540a9f72408f401 SHA-256: 6d72e5baa267aa17729a21910477f91eab15b2ba34ff8924da5d1a50304bc759
154 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, masquerading as a fishing report, to a link farm. One of the primary links, 'https://ttraff.link/wix?keyword=cape+cod+canal+fishing+report+2018', is flagged as a malicious redirector. The document's structure and the presence of many external links suggest an attempt to direct users to malicious infrastructure, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.link/wix?keyword=cape+cod+canal+fishing+report+2018
    • http://files.hawaiiwaterpolo.com/uploads/1/3/1/3/131398308/23ae1.pdf
    • http://rateb.security4x.com/uploads/1/3/1/6/131607163/88e7b8.pdf
    • http://files.armcandycollections.com/uploads/1/3/2/7/132740536/4374752.pdf
    • http://gebefe.scorrybreac.org/uploads/1/3/0/8/130813694/61e005ba51741.pdf
    • http://files.photoelectricsynergy.com/uploads/1/3/0/9/130969322/dalapuwadizexod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0438/1101/2770/files/femesewefulusituwofe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5361/2182/files/9992093428.pdf
    • https://cdn.shopify.com/s/files/1/0433/0808/9509/files/vemexuzejapigewabo.pdf
    • https://cdn.shopify.com/s/files/1/0440/5598/6326/files/armidale_police_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/8515/8807/files/ballabgarh_weather_report_today.pdf
    • https://static.usrfiles.com/ugd/07625c_03ca3ca67f3e417da37686e78a45c1f6.pdf
    • https://static.usrfiles.com/ugd/a4d998_ce19ad112f6f45cdaab729fb58cbf9c8.pdf
    • https://static.usrfiles.com/ugd/3bcfef_d50a53e8c0854145b7da7e72b3337a22.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_off000060a6.bin
7cd55476b744e35be74447e62ade179e277c39e09221dbef6604664559d43cac
pdf-font-stream PDF embedded font (sfnt) at offset 0x60A6 5840 bytes
font_01_sfnt_off00007485.bin
0f992cb39eef72885a756a68ab36c97d09a62956ce50f8cd78d40c1670880056
pdf-font-stream PDF embedded font (sfnt) at offset 0x7485 10364 bytes