Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b95114c5a7f5857…

MALICIOUS

PDF

40.5 KB Created: 2020-08-19 05:44:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f982ce8a00051961ecce26fc1581336f SHA-1: eb1ee7c4c29b15f9ad8ba486e311a2b102ff442b SHA-256: 0b95114c5a7f5857ae21449a6f03104aa323f996c2d753b59879fb2c3e3cfc97
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.cc, which is disguised as a 'general warranty deed form florida'. The document also features a large number of external PDF links, many hosted on Shopify, suggesting an attempt to obscure the malicious destination or engage in SEO manipulation for traffic. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of malicious intent.

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.cc/pify?keyword=general+warranty+deed+form+florida
    • http://files.boavitnutrition.com/uploads/1/3/0/8/130814003/3596494.pdf
    • http://paxajet.oxfordstation.pl/uploads/1/3/0/8/130814328/98556.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66083684812.pdf
    • https://cdn.shopify.com/s/files/1/0438/3758/7606/files/rezozuketifod.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/18972808533.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/autonomous_car_technology.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/cancelli_in_ferro_battuto_catalogo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/tilof.pdf
    • https://cdn.shopify.com/s/files/1/0428/5323/6902/files/cctv_installation_course.pdf
    • https://cdn.shopify.com/s/files/1/0428/1607/7991/files/luviwosenosirakewez.pdf
    • https://cdn.shopify.com/s/files/1/0430/7861/5189/files/90430177411.pdf
    • https://cdn.shopify.com/s/files/1/0429/2358/9788/files/iugr_rcog_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/6202/5624/files/52926170598.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_off00006260.bin
8e3b71283d479415326569080e898c87c8993cfc6bb2b07cae09237925f8bfa5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 5100 bytes
font_01_sfnt_off000073c2.bin
985d6d8173e0501de0546f12476dc239fa44f1c334f3be598b4160158b40f1dd
pdf-font-stream PDF embedded font (sfnt) at offset 0x73C2 9780 bytes