Malicious PDF — malware analysis report

Static analysis result for SHA-256 a28d2e0ebdb17c4d…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 18:50:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8ba617ed7eaae88218675822de5f3f9b SHA-1: f85345881b4436c5cfaadf1b0d53938804f91c07 SHA-256: a28d2e0ebdb17c4d86fcbbb9017e5b9b3968f0824e7d74dbf5ed9cde37f09a61
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to '2005 volvo s40 repair manual pdf' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous external links, many pointing to static.usrfiles.com, indicates a link farm designed to obscure the ultimate destination.

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=2005+volvo+s40+repair+manual+pdf
    • https://static.usrfiles.com/ugd/b8c837_37cc14b2892646c79dc8fb92c192adb8.pdf
    • https://static.usrfiles.com/ugd/b8c837_0430d59fc6b84d73877ca041e394734c.pdf
    • https://static.usrfiles.com/ugd/16a96a_fbb8eea933ff41dc8540a97cfed4ccaa.pdf
    • https://static.usrfiles.com/ugd/b8c837_2968bec767fc414990ff7115e05a105f.pdf
    • https://static.usrfiles.com/ugd/3ceeb9_ea19d2dd33fd4bfda589f187ee68ed0e.pdf
    • https://static.usrfiles.com/ugd/b8c837_b935ffb06d364bbbab26a4ffbc5f59e0.pdf
    • https://static.usrfiles.com/ugd/b8c837_898e8e7762264120a1679a80c3bdadeb.pdf
    • https://cdn.shopify.com/s/files/1/0432/0201/9487/files/1029293632.pdf
    • https://cdn.shopify.com/s/files/1/0440/3675/1525/files/planetas_internos_y_externos_y_sus_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0437/6212/2903/files/zamafexifakubetosovizokab.pdf
    • https://static.usrfiles.com/ugd/913720_3064d30e08704ec9b9eb9534ddd6cd11.pdf
    • https://static.usrfiles.com/ugd/4d400c_fd55ba4e237e44f0bd74c54e61525493.pdf
    • https://static.usrfiles.com/ugd/b8c837_06c94ce8b47e43228f51319a208a66f1.pdf
    • https://static.usrfiles.com/ugd/de3d83_77fdcd636f3e42f688e4e5407edcd1eb.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_off000068f6.bin
f2e517182a6a6cb50acb62463b581e62c6bb4887f24f3fa91f20dc3b6233a887		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68F6 5640 bytes
font_01_sfnt_off00007c08.bin
72f51e43b7e741cb86890ad400dd0b1332755a5e867c1837588ae9151a96e39f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C08 10376 bytes

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