Malicious PDF — malware analysis report

Static analysis result for SHA-256 20b881c7206fa8ca…

MALICIOUS

PDF

45.5 KB Created: 2020-09-04 14:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b9df3409ce3bff400a28adff807b5bac SHA-1: ee05592b0abe2b66757e456bcb30f1b1be4b9c66 SHA-256: 20b881c7206fa8ca87ffaabd95ce3b85ec2efca0b05469f16e363ec65127d5d7
150 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a link farm, embedding numerous external URLs. One prominent URL, https://ttraff.ru/wix?keyword=ui+ux+designer+resume+template, is flagged as a malicious redirector. The document's content, though heavily obfuscated, appears to be a lure related to resume templates, suggesting a phishing or redirection attack. The ML classifier also strongly indicated maliciousness.

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.ru/wix?keyword=ui+ux+designer+resume+template
    • https://static.usrfiles.com/ugd/23e9be_950af19486bc4bfa866e302f141fa595.pdf
    • https://static.usrfiles.com/ugd/a8c229_2b7f46cf259a406ca41656fe06b90ae0.pdf
    • https://static.usrfiles.com/ugd/e73fea_6078668067a3464bbdd2153acd411bfe.pdf
    • https://cdn.shopify.com/s/files/1/0440/4684/4054/files/zegupobid.pdf
    • https://cdn.shopify.com/s/files/1/0458/1163/0246/files/boss_mobi_new_song.pdf
    • https://cdn.shopify.com/s/files/1/0429/9702/2879/files/22205870565.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/stalking_jack_the_ripper_audiobook_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/2865/9874/files/prentice_hall_algebra_2_teacher_s_edition.pdf
    • https://cdn.shopify.com/s/files/1/0431/4847/6570/files/77509783535.pdf
    • https://cdn.shopify.com/s/files/1/0433/9941/3925/files/65926525048.pdf
    • https://cdn.shopify.com/s/files/1/0429/5458/8316/files/sylvania_automotive_bulb_fitment_guide.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_off0000741e.bin
2f159a934467d41a8bad4e7c12acb2ef8f9c6858f02b57e27f97afbbcc354657		 pdf-font-stream PDF embedded font (sfnt) at offset 0x741E 5336 bytes
font_01_sfnt_off00008633.bin
bb16013427e05f79ebb8046043b3ddf05a98e4e246000089dd3d962cb6afaf04		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8633 10420 bytes

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