Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff6adbc3f258f92f…

MALICIOUS

PDF

51.5 KB Created: 2020-08-07 02:10:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 04ff600a50965b3957a46eb2d0d9ce68 SHA-1: c7b7e01b08ebc59c1677900b4de712f75059d3e1 SHA-256: ff6adbc3f258f92f835317ac8425bd2ac36637033f5dca73f64f7189183e426f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though partially corrupted, includes the target URL and a deceptive title, 'Symbolic interactionism in education pdf'. This suggests a social engineering tactic to trick users into visiting the malicious site. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to host further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=symbolic+interactionism+in+education+pdf
    • http://files.thesportdome.net/uploads/1/3/0/8/130874330/1231640.pdf
    • http://levejirof.ruleofthreepod.com/uploads/1/3/1/1/131163635/0ea033cf679.pdf
    • http://files.lumenctr.org/uploads/1/3/1/8/131871796/vatebobunaxu-sikuzoxupe-xebenujin-neruzomusame.pdf
    • http://wurofo.applebymagnaparishcouncil.co.uk/uploads/1/3/1/6/131606056/3140024.pdf
    • http://files.stljaycees.com/uploads/1/3/2/6/132682646/4563693.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/64890142679.pdf
    • https://cdn.shopify.com/s/files/1/0432/9350/7739/files/xejusarobaxisirom.pdf
    • https://cdn.shopify.com/s/files/1/0439/4100/3432/files/notiginanorup.pdf
    • https://cdn.shopify.com/s/files/1/0432/4065/2960/files/23232333613.pdf
    • https://cdn.shopify.com/s/files/1/0440/9756/8920/files/japekawuwinu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6982/4407/files/55570396568.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/jogijoxatubutozonoxiv.pdf
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/tiguno.pdf
    • https://cdn.shopify.com/s/files/1/0429/7729/6543/files/dawojuvejifalogemafe.pdf
    • https://cdn.shopify.com/s/files/1/0435/1125/1099/files/81741356827.pdf
    • https://cdn.shopify.com/s/files/1/0437/1762/3957/files/97579391631.pdf
    • https://cdn.shopify.com/s/files/1/0431/5031/1579/files/cartesian_cylindrical_and_spherical_coordinate_systems.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2455/files/business_statistics_2nd_edition_donnelly.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008b3f.bin
7a7f6a3b4ad804d236840a6436612d873e8a9bee122bfc88c3d434e6260bbb1b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3F 5644 bytes
font_01_sfnt_off00009e59.bin
c93ce1bd143afe95bfa842a4acf2cb43666821b912c5eb111a5868372bc7688e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9E59 10076 bytes