Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2169fee318acc33…

MALICIOUS

PDF

40.8 KB Created: 2020-09-03 22:45:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64d504ddcd432fd74a921fd0d8cd5590 SHA-1: ba296d833290aeabb2886ed46700f2ca4d94df1f SHA-256: f2169fee318acc333a098841479b3424fedf741cf1afa8aaf1de6cf250654808
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/wix?keyword=happy+birthday+gift+box+images+free'. The document body, though heavily obfuscated, contains this URL and also a link to a Shopify domain, which is part of a link farm. The primary attack vector appears to be social engineering through a deceptive link.

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.me/wix?keyword=happy+birthday+gift+box+images+free
    • https://cdn.shopify.com/s/files/1/0434/4922/1286/files/notice_of_eviction_template_ontario.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0156/files/97363443343.pdf
    • https://cdn.shopify.com/s/files/1/0437/8699/3813/files/measure_of_skewness_and_kurtosis.pdf
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/measurement_conversion_worksheets_grade_5.pdf
    • https://static.usrfiles.com/ugd/60933b_6a19ddcac4304c96b68d429cfe0663b0.pdf
    • https://static.usrfiles.com/ugd/02af14_9c7fc3aff4364e82afb1953ce425d724.pdf
    • https://static.usrfiles.com/ugd/a382ee_b5e22ec4581c4ff5b6f895344c32d131.pdf
    • https://static.usrfiles.com/ugd/b6bf5b_246e9216bcd248afb0bf006798cad417.pdf
    • https://cdn.shopify.com/s/files/1/0431/6066/6274/files/guvodegozedapexaba.pdf
    • https://cdn.shopify.com/s/files/1/0461/9223/0553/files/codine_et_guaifenesin_maigres.pdf
    • https://cdn.shopify.com/s/files/1/0463/6282/0769/files/counter_strike_1._6_gt_2019.pdf
    • https://cdn.shopify.com/s/files/1/0438/0934/1597/files/prenatal_diagnosis_of_down_syndrome.pdf
    • https://cdn.shopify.com/s/files/1/0428/5959/3894/files/9929137932.pdf
    • https://cdn.shopify.com/s/files/1/0435/2960/1175/files/90613499537.pdf
    • https://cdn.shopify.com/s/files/1/0431/3704/0538/files/antioxidant_defense_system.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_off0000613f.bin
bc1411aa51d880b5f6834660f43db1e175abf7a47253d26355f34520b7aa2766		 pdf-font-stream PDF embedded font (sfnt) at offset 0x613F 5696 bytes
font_01_sfnt_off00007483.bin
d699c41afe9277edc3570eacf56f8e32ec068c0659f1e6f3e99f3dfa7a261c06		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7483 9996 bytes

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