Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1d68580026c6547…

MALICIOUS

PDF

41.3 KB Created: 2020-08-31 03:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7e8dbb06b590b8f24d6f6aebfb0a10eb SHA-1: 6a6329fd346acb01bd58d19ea2568e42580f57dd SHA-256: a1d68580026c6547beb0d7f45fcbcb0f8dd7215bf1c9c6e083b4177a79a4c6a0
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, with a critical heuristic firing indicating a malicious redirector link. The document body, though heavily obfuscated, contains the primary malicious URL. The presence of numerous links to external PDFs suggests an attempt to create a link farm or distribute further malicious content.

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=y+donde+esta+el+fantasma+1
    • https://static.usrfiles.com/ugd/345929_8ec320001a9344839ffe9c4340769456.pdf
    • https://static.usrfiles.com/ugd/b8c837_5a132efa975a4f72b20008bd854b21ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1d666e654ef4db9bbea46cad0030d6d.pdf
    • https://static.usrfiles.com/ugd/ac51ce_ddc62c73428043668ec1a13b9e577c19.pdf
    • https://static.usrfiles.com/ugd/99a8f2_e814f6ebd1a64d469fb5a53e08392720.pdf
    • https://static.usrfiles.com/ugd/dc51bb_80b63dba0dba4047821593c4ac4d826d.pdf
    • https://static.usrfiles.com/ugd/238140_0debfd2dd8b1439db1c22b0491db26be.pdf
    • https://static.usrfiles.com/ugd/b8c837_942f0c572a584e59a5cc141a15430da4.pdf
    • https://static.usrfiles.com/ugd/12f4eb_8757dba9312648948db20150faf6ff8e.pdf
    • https://static.usrfiles.com/ugd/b8c837_644cac6e97d74320b30df440a161a425.pdf
    • https://static.usrfiles.com/ugd/f46427_b1ef1b55cf504a7c80bf3db66f5d5e70.pdf
    • https://cdn.shopify.com/s/files/1/0436/9963/4326/files/50227551807.pdf
    • https://cdn.shopify.com/s/files/1/0431/5529/2321/files/78806275481.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_off00006010.bin
56e6f4c795ef50f59f3f61fa1afe14483644fed4d3ae00ed2e60a4dbc8d9ce90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6010 4968 bytes
font_01_sfnt_off000070f2.bin
59526b513055b83c55485c09dec53c2946ad6ddd378b3a6d28e6f0ca7c1345a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F2 11652 bytes

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