Malicious PDF — malware analysis report

Static analysis result for SHA-256 81b56ef8be158e19…

MALICIOUS

PDF

37.8 KB Created: 2020-09-02 15:36:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62cfc619918460f9fbe59a0a995505ec SHA-1: f780334424b312436d3bca4387754e243c8ea6fd SHA-256: 81b56ef8be158e191f5fb26dcb623a579ad4f3f61f8acfa33c2b58bf867c2f4c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to benign Shopify domains, but one critical link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL https://ttraff.me/wix?keyword=mwp+community+aid+annual+report, suggesting a lure to a malicious site disguised as an annual report. No scripts were extracted from this sample.

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=mwp+community+aid+annual+report
    • https://cdn.shopify.com/s/files/1/0429/5560/4124/files/visage_2_french_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0454/8503/1576/files/automated_guided_vehicle_types.pdf
    • https://cdn.shopify.com/s/files/1/0433/8240/7318/files/presentation_template_free_vector.pdf
    • https://cdn.shopify.com/s/files/1/0429/3863/0300/files/bawudu.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_efee4f9573a44f6ca21b799a8264f50b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0af06bc528704f598aac5c91b9f3948a.pdf
    • https://static.usrfiles.com/ugd/575363_6d70366c599b4aea871a2900dfc15547.pdf
    • https://static.usrfiles.com/ugd/b8c837_d4e704b806b04769b2819c20efdb9da9.pdf
    • https://static.usrfiles.com/ugd/77941b_f0cb08a3b22646d992e39182cea37d1b.pdf
    • https://static.usrfiles.com/ugd/8127dd_de5a561d35604345b0fd26a0089213fd.pdf
    • https://static.usrfiles.com/ugd/b8c837_470e11c826a442f0ab865352db2ba501.pdf
    • https://static.usrfiles.com/ugd/8b2c09_73d75deb98834c6f8dbfa7efe5cb068b.pdf
    • https://cdn.shopify.com/s/files/1/0429/2516/2652/files/the_vegan_stoner_cookbook_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/78819802283.pdf
    • https://cdn.shopify.com/s/files/1/0433/8260/3927/files/37061156927.pdf
    • https://cdn.shopify.com/s/files/1/0439/6823/3630/files/annihilation_of_caste_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000049a2.bin
2b4df00c6606b457edc281321d5cf3df3411f8b120d4dfbb73801876dfd94ba8
pdf-font-stream PDF embedded font (sfnt) at offset 0x49A2 5124 bytes
font_01_sfnt_off00005b05.bin
948d019b7c62999e80b716809daf972a4bc37948fce7af740cfc86faffc40795
pdf-font-stream PDF embedded font (sfnt) at offset 0x5B05 9756 bytes
font_02_sfnt_off00007c3e.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333
pdf-font-stream PDF embedded font (sfnt) at offset 0x7C3E 4324 bytes