Malicious PDF — malware analysis report

Static analysis result for SHA-256 022097cb9ad4a268…

MALICIOUS

PDF

55.7 KB Created: 2020-09-02 00:06:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e5ec563b1dd9b208c98c524bfd74d43 SHA-1: 010a1021b4c8b813778f30199d8978895ced7a3e SHA-256: 022097cb9ad4a268bf239ceee5c34f2cc16b28697ff4307a8ba6bf117ca78c1a
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=la+boite+a+merveille+r%25C3%25A9sum%25C3%25A9+pdf'. Additionally, another heuristic indicates a PDF link farm with numerous external links, suggesting an attempt to distribute content or lure users. The ML classifier also strongly flagged this PDF as malicious.

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/wix?keyword=la+boite+a+merveille+r%25C3%25A9sum%25C3%25A9+pdf
    • http://fontawesome.iohttp://fontawesome.io/license/
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/4379/0760/files/1994_ford_explorer_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/9494/0575/files/66839390519.pdf
    • https://cdn.shopify.com/s/files/1/0431/8704/4510/files/lananefuzutuvo.pdf
    • https://cdn.shopify.com/s/files/1/0438/5875/5749/files/ethiopian_airlines_crash_report_2020.pdf
    • https://static.usrfiles.com/ugd/930050_3aeee2a4cf414bdfa3f5210cff74f3c6.pdf
    • https://static.usrfiles.com/ugd/b8c837_f9af000aa86d462abb3dd7bdb27041ae.pdf
    • https://static.usrfiles.com/ugd/cec570_3555d888e1514d3e834c89c6f3609d7d.pdf
    • https://static.usrfiles.com/ugd/63d3ad_52d7edf4d89c46c6b96543912f34e839.pdf
    • https://static.usrfiles.com/ugd/07625c_7f12a0528c6b41f5b1e421b38768230a.pdf
    • https://static.usrfiles.com/ugd/0f5b72_5010526021c14a84b1a32ac5e34ccc9e.pdf
    • https://static.usrfiles.com/ugd/0286dd_6c03f9619a224a50a5a8bb72d58bc33e.pdf
    • https://static.usrfiles.com/ugd/b8c837_eb8056e2478d4a9590e3d1a63ee3de1e.pdf
    • https://static.usrfiles.com/ugd/b8c837_56651e16c1894a7dbea5127926c6d992.pdf
    • https://static.usrfiles.com/ugd/a2e20a_8b2c5542bf0a41faa0707ba6d5610544.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007968.bin
bd166d64c4ac8954e2933e6e483f73d556bfd5753cccffed8791ed292fde615a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7968 1660 bytes
font_01_sfnt_off000081aa.bin
7d5633911d09556f64fcc323deb37e02bd1aefa5930169a1597aeb3ea51680bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81AA 5468 bytes
font_02_sfnt_off000093ef.bin
a89c69c98f1cd24a8224a1e960de6e598c5b4d0e694538b6fd4074aca50238e2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93EF 12196 bytes
font_03_sfnt_off0000ba76.bin
1957429f870e3021b6bba02e9571c572e3efb2afeeaf289904279bda08619914		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBA76 16060 bytes

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