Malicious PDF — malware analysis report

Static analysis result for SHA-256 890e6caa8814c23f…

MALICIOUS

PDF

53.0 KB Created: 2020-08-31 06:24:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5a6c951e3696972b3e7cce6a032c75a SHA-1: 83ec67303dc5f4165635fc21f8add93f0fdfb946 SHA-256: 890e6caa8814c23fc0e1793896249b29cd2015d7ad2c61ff48ff48f59130b041
150 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised as a survey template. This redirector likely leads to further malicious content or exploits. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains the URL that is also listed in the heuristics.

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.com/wix?keyword=supplier+satisfaction+survey+template
    • https://static.usrfiles.com/ugd/e5cbe5_6c683a13ca264f1a951f1a96fba35e69.pdf
    • https://static.usrfiles.com/ugd/b8c837_e2a1da7199a44c059a1aa85f7bc1cda8.pdf
    • https://static.usrfiles.com/ugd/b8c837_8ab783d66b624c129b02028b7d30d5db.pdf
    • https://static.usrfiles.com/ugd/078c79_b50180dcf04243f3be3826e95c69bb10.pdf
    • https://static.usrfiles.com/ugd/6f9b04_ec0eba31791c40b99fd0cf87bdfaeaa6.pdf
    • https://static.usrfiles.com/ugd/ae15ca_fb2609de1fd247a39e614c624608aba7.pdf
    • https://static.usrfiles.com/ugd/eb4c03_0fb543070dc64022907e85d2c23486d8.pdf
    • https://static.usrfiles.com/ugd/544c7e_b1c8fa1f47b24c3c9046e8c3ca19419b.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2a34f99e45c4631a1cac9d382272220.pdf
    • https://static.usrfiles.com/ugd/b8c837_0101ef8a9c1742d981a7ea29c01fd187.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cbcdd66fa46440fabbe87efdfb1d3b1.pdf
    • https://static.usrfiles.com/ugd/b8c837_094417feb9f5406e903493728ffa6467.pdf
    • https://static.usrfiles.com/ugd/9ec29b_8e04d8a358304b00b1174f8fb130e83a.pdf
    • https://static.usrfiles.com/ugd/0fdb6d_78a8b2714bcf4e1f8c485e7e26c987d6.pdf
    • https://static.usrfiles.com/ugd/11f207_611ed07652f543efbe4e31186032ba44.pdf
    • https://cdn.shopify.com/s/files/1/0433/5042/5750/files/56369912020.pdf
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/midpoint_and_segment_bisector_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/5045/1623/files/22757704213.pdf
    • https://cdn.shopify.com/s/files/1/0429/3600/8871/files/jipirovubid.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/vizitofavojedejed.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/
    • https://static.usrfiles.com/ugd/ae15ca

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c61.bin
a6213ab11c4089da53e10e8800bd48d356b44e61fe4e4eeb479b52139bb733a2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C61 5428 bytes
font_01_sfnt_off00008ebf.bin
e8986df376c158759cd4cd16971c2f3cb8535d8657f6a8161de170767009933e
pdf-font-stream PDF embedded font (sfnt) at offset 0x8EBF 9992 bytes
font_02_sfnt_off0000b135.bin
f3dffd34faf2b4558d2024b4ddfcd7a423eafe067af13a21406636cc63838621
pdf-font-stream PDF embedded font (sfnt) at offset 0xB135 16124 bytes