Malicious PDF — malware analysis report

Static analysis result for SHA-256 979c25f45f9bac0c…

MALICIOUS

PDF

61.9 KB Created: 2020-08-29 19:16:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 378e2fcb327235e79dff4b1dd1337f8b SHA-1: 618e8d05a79869d194683a0a0760769529689902 SHA-256: 979c25f45f9bac0ca18bb08562f997effd2074706ffbee8c2b3161ae7ed26f16
128 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves tricking the user into clicking this link, which then leads to a malicious site.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=um+lugar+chamado+notting+hill+pelicu
    • https://cdn.shopify.com/s/files/1/0433/2562/0374/files/labefigogilipozobigoruw.pdf
    • https://cdn.shopify.com/s/files/1/0439/2475/0491/files/81227919247.pdf
    • https://cdn.shopify.com/s/files/1/0431/8075/3058/files/zivalidakitome.pdf
    • https://cdn.shopify.com/s/files/1/0432/0981/8272/files/cross-_tail_current_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/etc_hosts_windows_10.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/nofixovededajumasipilufam.pdf
    • https://cdn.shopify.com/s/files/1/0436/3013/3406/files/vowepisegotariwutanaz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9911/2099/files/dusofuzova.pdf
    • https://static.usrfiles.com/ugd/b8c837_2f3a53aed817421298ef206ac3598351.pdf
    • https://static.usrfiles.com/ugd/b8c837_f647a827525048d09bf9d33589d6b830.pdf
    • https://static.usrfiles.com/ugd/b8c837_4c3d7d2fec454c688b25f2e765891efd.pdf
    • https://static.usrfiles.com/ugd/b8c837_62791ce8fa0e495aa54d24cf65722194.pdf
    • https://static.usrfiles.com/ugd/b8c837_0cf667b027d048ed83fedcfa84e3f7d2.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f629cc0bc584e1088d5d1d04d2847f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_1cad664b32c740599c559bfef1fdb2b9.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_off0000a55c.bin
8681da28f5368a1616af6c22166f0277d27cb7495bafb21fca80499c3a27b176
pdf-font-stream PDF embedded font (sfnt) at offset 0xA55C 5184 bytes
font_01_sfnt_off0000b6c8.bin
e7e6a42c71a97c012531f4903ea5f431cff030c1fc6f2b690d4e78eea6fb466e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C8 11212 bytes
font_02_sfnt_off0000dc4c.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4C 4324 bytes