Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4a198b305d9e047…

MALICIOUS

PDF

35.1 KB Created: 2020-08-31 11:36:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5b11db2b3d62215ecf88c4f1e5d92f98 SHA-1: 9e4b564324197c5d5d3a98911489a6c6d01c9daa SHA-256: b4a198b305d9e0475611c2ca83f4e8f0f5a9c102dee4bec4cab54a586ac85c8d
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'aproximaciones ala psicoterapia guillem feixas pdf' and the wkhtmltopdf application, suggesting a lure to a fake document or resource. The presence of a link farm indicates an attempt to distribute malicious content broadly.

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.ru/wix?keyword=aproximaciones+ala+psicoterapia+guillem+feixas+pdf
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/vezijorad.pdf
    • https://cdn.shopify.com/s/files/1/0437/4754/1146/files/p90x3_schedule_lean.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/tudelidikiw.pdf
    • https://cdn.shopify.com/s/files/1/0436/0290/3202/files/8654076778.pdf
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/32889315949.pdf
    • https://static.usrfiles.com/ugd/e2b09b_2c3fe98631764a79889f61d268c95610.pdf
    • https://static.usrfiles.com/ugd/b8c837_1da9f961d4434ef8b662912083cb0192.pdf
    • https://static.usrfiles.com/ugd/77d535_cc248aa6902042dea472291d1e226a14.pdf
    • https://static.usrfiles.com/ugd/b8c837_1318525437d04026a36bb8fd533469f4.pdf
    • https://static.usrfiles.com/ugd/74a852_faccbc9710dc448689dde90058584227.pdf
    • https://static.usrfiles.com/ugd/dc8a8e_0b5ad4079c4a4af4823c2281e0180403.pdf
    • https://static.usrfiles.com/ugd/b8c837_c064f48203fc4112bd9e96fab972b9f6.pdf
    • https://static.usrfiles.com/ugd/d4da64_f34912b8838f4b6c8764bb468f43fcdc.pdf
    • https://static.usrfiles.com/ugd/b8c837_4fe9ca3e4ebf4cb6be6b9aff8f9824a2.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_off00004a70.bin
977115bafbe1a2dedb7a10222bb3e14a26a8f82e9366517ed862a1b197eb3ae1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A70 5532 bytes
font_01_sfnt_off00005d28.bin
fa08bcdc80e58fa203f6e3649c4e21bc52f98cd872452aeef041667ecae4e86f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D28 10236 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.