Malicious PDF — malware analysis report

Static analysis result for SHA-256 abe3822bddcf1366…

MALICIOUS

PDF

53.5 KB Created: 2020-08-29 09:00:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d599156535167a6081c71066e4cf824 SHA-1: 8740d8a6926c0ac098558a26f58512454748790b SHA-256: abe3822bddcf1366172de399755ccd9e9a63312aff02b163837915e5ce49a05c
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/wix?keyword=lupus+recovery+diet'. This URL is presented within the document body, suggesting a social engineering lure related to a 'lupus recovery diet'. The file also contains a large number of embedded links, many of which point to static.usrfiles.com, indicating a link farm strategy. No scripts were extracted from this sample.

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=lupus+recovery+diet
    • https://static.usrfiles.com/ugd/b8c837_04eb9e0fcc4344748837390be136e3eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_b9cb98e7aaa244ebb303e8d3e69481bb.pdf
    • https://static.usrfiles.com/ugd/b8c837_2526511def294fe18bce66adcfdb3219.pdf
    • https://static.usrfiles.com/ugd/b8c837_6dc7f39e312144e18ce24ed2f66e7f4e.pdf
    • https://static.usrfiles.com/ugd/b8c837_57428347f6fc468890c7973cfa0577a9.pdf
    • https://static.usrfiles.com/ugd/b8c837_b798244337974331a7ca0fb43a6ad61f.pdf
    • https://static.usrfiles.com/ugd/b8c837_f62fa2c5847546c7a0229e23673290ac.pdf
    • https://cdn.shopify.com/s/files/1/0461/8895/3751/files/88309910012.pdf
    • https://cdn.shopify.com/s/files/1/0464/6086/2632/files/firimavubexubikajojenif.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/36427430716.pdf
    • https://static.usrfiles.com/ugd/b8c837_132b69ffa7884215a1e977c4c89356e1.pdf
    • https://static.usrfiles.com/ugd/b8c837_cd3b87d03e234e6bbd8bfb3b0559112e.pdf
    • https://static.usrfiles.com/ugd/b8c837_86051289761a4ed39fb280d958678f6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a138b527534a4d16bf2794502b629a3b.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_off00009368.bin
57e64d812764f79f2394cb8c190c850efacbd85b677e5cab137fc74423c82033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9368 4928 bytes
font_01_sfnt_off0000a448.bin
d01dd9a4029e6ede8bf884ca6995cebd701bfafec394f883fdc0083a752ddcb7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA448 10720 bytes

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