Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc871564237e919…

MALICIOUS

PDF

45.0 KB Created: 2020-08-31 21:52:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2d395629baf8c06ccc09b93ac3c3bd5 SHA-1: 21f8fe988237d29560c5f3907a8b9ee516977dbc SHA-256: fdc871564237e91991a814c2e15375e12c4b1892f2916b253822cda84ec04a2f
130 Risk Score

Malware Insights

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

The PDF file contains a lure for a retainer service contract template, which is a common tactic for phishing or scam attempts. It embeds a link to a known malicious redirector, ttraff.link, which is designed to lead users to further malicious content. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm intended to obscure the final destination or to appear legitimate.

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.link/wix?keyword=retainer+service+contract+template
    • https://cdn.shopify.com/s/files/1/0431/1737/9745/files/8296577732.pdf
    • https://cdn.shopify.com/s/files/1/0454/6569/8462/files/12695686575.pdf
    • https://cdn.shopify.com/s/files/1/0450/9813/9813/files/35727192850.pdf
    • https://cdn.shopify.com/s/files/1/0429/2021/4681/files/bodigakoleludopaba.pdf
    • https://static.usrfiles.com/ugd/b8c837_afd93b34cf5044dc8fdf7ef74441fcd7.pdf
    • https://static.usrfiles.com/ugd/6df952_b6913cd5a8cf441eb78b4a463bb00bbc.pdf
    • https://static.usrfiles.com/ugd/3eed2b_05288e92361447b1b8450184299806ab.pdf
    • https://static.usrfiles.com/ugd/74e9cf_22f6a54e8fe4436084cf6b0f659d2e92.pdf
    • https://static.usrfiles.com/ugd/b8c837_28fac90fa32549fab076ee66f0d9fae5.pdf
    • https://static.usrfiles.com/ugd/362633_01ffb71ad76d4ac691f1c2e15786d688.pdf
    • https://cdn.shopify.com/s/files/1/0437/5651/9576/files/78993027191.pdf
    • https://cdn.shopify.com/s/files/1/0430/1773/2249/files/alvarado_score_appendicitis.pdf
    • https://cdn.shopify.com/s/files/1/0428/7594/5113/files/caducidad_en_materia_laboral.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_off00007311.bin
10abe938be156114a5fdd44730eef55adbb6b2b9f420548b9acdcbfb34398d12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7311 5148 bytes
font_01_sfnt_off00008485.bin
fc9c863244eac4dc605a53931b6fcf8ebdbc4405275e4ce5ebc4c349873ddf37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8485 10180 bytes

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