Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b3993ab0d57e98…

MALICIOUS

PDF

40.7 KB Created: 2020-08-30 22:24:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8ea79ee03b91802333b169aa8873aa0 SHA-1: 10a76d447bf67d1ef37ae3e5a7ab4f18e74679d9 SHA-256: 35b3993ab0d57e98762f52c80252381fe4d745c4f30a0f1ff07d184b2644542c
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=recetas+guisantes+vegetarianos'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. While the document body text is heavily corrupted, the presence of these links strongly suggests a malicious intent, likely to redirect users to phishing sites or to distribute further malware. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.com/wix?keyword=recetas+guisantes+vegetarianos
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/92302979367.pdf
    • https://cdn.shopify.com/s/files/1/0439/8995/8814/files/ratefisofebazoba.pdf
    • https://cdn.shopify.com/s/files/1/0437/7886/7358/files/teaching_approaches_in_secondary_social_studies.pdf
    • https://cdn.shopify.com/s/files/1/0435/4719/7594/files/3701492661.pdf
    • https://static.usrfiles.com/ugd/b8c837_a75e6de26de8406ea88b090b971bc2af.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/migazu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4109/4817/files/68585220362.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/dc_power_supply_connectors_guide.pdf
    • https://static.usrfiles.com/ugd/b8c837_39b8b4365f7e4d7295fc93e10f219f40.pdf
    • https://static.usrfiles.com/ugd/b8c837_d48170fc2f3d4ee7b1f0ec795bda5ad2.pdf
    • https://static.usrfiles.com/ugd/cd79e3_f410fc2538a3459096f6704969e9e4ad.pdf
    • https://static.usrfiles.com/ugd/764aaa_0034dc8190ee409293c1cac567198232.pdf
    • https://static.usrfiles.com/ugd/1a89c8_95833feaf74f4c3290b04d4ecec7a2a2.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_off00005d0b.bin
5ee87890f06e88cd9ae52e9f9b274f0bbdf311001e16fce0930431c48d330db2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0B 5004 bytes
font_01_sfnt_off00006e24.bin
9eca27922237e6edb1fce4f358e7da6d5de5cc2956148cf193903bff5ced037f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E24 11876 bytes

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