Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab6a813e749bace1…

MALICIOUS

PDF

34.1 KB Created: 2020-08-30 23:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5230a609bfd46ba25aae17a62a2a0395 SHA-1: bdc6247c2026bf450539010bbabca8607dec075d SHA-256: ab6a813e749bace17a0e23147167d6ec21c2dadbd663bf1b7552ef5eb2c424df
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on Shopify. One critical heuristic firing indicates that the document links to known malicious redirector infrastructure, specifically 'ttraff.cc'. The document body, though heavily obfuscated, contains text related to 'Vestidos de quince anos en guadalaja' and the malicious URL, suggesting a lure to a phishing or malware distribution site.

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.cc/wix?keyword=vestidos+de+quince+anos+en+guadalaja
    • https://cdn.shopify.com/s/files/1/0440/5755/9190/files/towufud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9003/5366/files/35896567489.pdf
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/metal_carbonyls.pdf
    • https://static.usrfiles.com/ugd/b8c837_d432e32bd3b54e0988582ef2b3f4adce.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d9449bcc04a4a73972dae8474ec9713.pdf
    • https://static.usrfiles.com/ugd/8ab72e_c9aa1d7e7b9645eab1d2bebba94b12ba.pdf
    • https://static.usrfiles.com/ugd/d01287_c4a78481f2a7464383cce7829d6466fb.pdf
    • https://static.usrfiles.com/ugd/be19e1_805eb9d0dc1e41659055dd785e118d5d.pdf
    • https://cdn.shopify.com/s/files/1/0432/1538/8840/files/carnatic_flute_books.pdf
    • https://cdn.shopify.com/s/files/1/0436/4802/4741/files/twist_of_fate_2_movie.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_off00004397.bin
f97cb5b6e4da298c89712689f22ae1ea59d139dedccbaa7507b3c8c747559fe7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4397 5180 bytes
font_01_sfnt_off00005542.bin
bb702788d6910ee573a74eaff85b8156ff0b2a2b15b47e20283d953f6df2f558		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5542 11304 bytes

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