Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f3f6658494a44ff…

MALICIOUS

PDF

43.9 KB Created: 2020-08-30 08:50:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b13637d5eda9909399d45ab580752eb4 SHA-1: 9ba29c0e3f2a942ef3178eeb2a326a825a9d6150 SHA-256: 2f3f6658494a44ff4c2b99b88e11615e159077ae1746871b07e7a3d5a83db292
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/wix?keyword=baby+brezza+enfamil+newborn'. This URL is likely part of a phishing or scam campaign, attempting to lure users with a product-related search term. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of the malicious link and the PDF structure strongly suggest a phishing or redirection attack.

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=baby+brezza+enfamil+newborn
    • https://cdn.shopify.com/s/files/1/0431/6695/7722/files/xonexiru.pdf
    • https://cdn.shopify.com/s/files/1/0430/7206/1591/files/18488499919.pdf
    • https://cdn.shopify.com/s/files/1/0429/9443/4202/files/tarebumaxusodegadagipolo.pdf
    • https://cdn.shopify.com/s/files/1/0430/9018/2304/files/zewevodof.pdf
    • https://cdn.shopify.com/s/files/1/0429/8797/8913/files/88619180411.pdf
    • https://static.usrfiles.com/ugd/02beb7_4a6a6c109ccb4c71823f1e2b53d8353b.pdf
    • https://static.usrfiles.com/ugd/516574_243e13ec0bf0471c94f84b392f896c07.pdf
    • https://static.usrfiles.com/ugd/80c1db_0b99ed1be45a4b82a03d1872c8c7cbbd.pdf
    • https://static.usrfiles.com/ugd/538d67_06e44c667f67406f9d7d85fe8ac00b14.pdf
    • https://static.usrfiles.com/ugd/b8c837_bc2a8d158dd94335a705d6c1246d6646.pdf
    • https://static.usrfiles.com/ugd/b8c837_246c71750add42be91c1e6c780613f0a.pdf
    • https://static.usrfiles.com/ugd/89c6ad_38aa80bb2da84b429a079e5c409c5c8d.pdf
    • https://cdn.shopify.com/s/files/1/0447/4375/3877/files/algebra_2_word_problems.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nuruge.pdf
    • https://cdn.shopify.com/s/files/1/0432/5313/7570/files/quantitative_aptitude_syllabus_for_ibps_po.pdf
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/tetawi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005494.bin
629123bfde0685c5f69bbdd27ec008bde0224d5c30af1dabb990f6ee33ea778e
pdf-font-stream PDF embedded font (sfnt) at offset 0x5494 6440 bytes
font_01_sfnt_off00006488.bin
51dc5c28efdf70839d823987b3c570f497059af0107995ea8e0b9b5c2821f90f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6488 5168 bytes
font_02_sfnt_off00007626.bin
a75722f7102e590dffbf4ab12998966e464e11293d23368760434f37ecdf1b71
pdf-font-stream PDF embedded font (sfnt) at offset 0x7626 16628 bytes