Malicious PDF — malware analysis report

Static analysis result for SHA-256 2bc0b309c0d7d410…

MALICIOUS

PDF

58.5 KB Created: 2020-09-01 11:28:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f1a3955c9811b8910dff3204d621f68d SHA-1: bf1d8bef3ead92cd01ad86da9b45b9ae1743a1e5 SHA-256: 2bc0b309c0d7d410a87342e141677cee83892d91d7a911b8ec0b48fa8552a474
130 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 link farm, with numerous external PDF links, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains text related to 'indirect cash flow statement template excel' and the malicious URL, suggesting a lure for financial documents. The primary attack pattern involves redirecting the user to malicious infrastructure via the embedded link.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=indirect+cash+flow+statement+template+excel
    • https://cdn.shopify.com/s/files/1/0438/8998/3640/files/iworks_09_trial.pdf
    • https://cdn.shopify.com/s/files/1/0431/9179/5873/files/deh_x6500bt_error_10.pdf
    • https://cdn.shopify.com/s/files/1/0439/5335/6955/files/acute_bronchitis_antibiotics_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0431/2304/8610/files/91369137617.pdf
    • https://cdn.shopify.com/s/files/1/0428/2744/8476/files/vufatinu.pdf
    • https://cdn.shopify.com/s/files/1/0437/2371/8805/files/tojemakaw.pdf
    • https://cdn.shopify.com/s/files/1/0438/1537/0912/files/wijemifitobapatapopu.pdf
    • https://cdn.shopify.com/s/files/1/0428/8059/8172/files/mac_recovery_server_could_not_be_contacted.pdf
    • https://cdn.shopify.com/s/files/1/0429/0982/7231/files/sipelozukugagufu.pdf
    • https://cdn.shopify.com/s/files/1/0430/7730/4484/files/zalorowo.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/sagibepurekakexeno.pdf
    • https://static.usrfiles.com/ugd/affb4a_65705b1f7970457a87e904733e359f88.pdf
    • https://static.usrfiles.com/ugd/270e53_8f90c7c97f0e4b269d904406262c2fc7.pdf
    • https://static.usrfiles.com/ugd/7d21c0_6326f05e103d4f389a999b429b74da2b.pdf
    • https://static.usrfiles.com/ugd/0c41e7_e5ce7301501b479dbceabd3da8d76b43.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_off00009bb9.bin
a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8
pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB9 2828 bytes
font_01_sfnt_off0000a5b3.bin
276e021be685953e9f27bff590faca348448265ac08eb5dc36095db41674feca
pdf-font-stream PDF embedded font (sfnt) at offset 0xA5B3 5492 bytes
font_02_sfnt_off0000b84e.bin
a153033d92133c3d0a5270f4c7417cc7fcbe231c0a268338405d1f080a71d16a
pdf-font-stream PDF embedded font (sfnt) at offset 0xB84E 10504 bytes