Malicious PDF — malware analysis report

Static analysis result for SHA-256 36412eec50d33d5f…

MALICIOUS

PDF

38.0 KB Created: 2020-08-30 23:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8096adcdcc96351d961b8aa9f5e88b77 SHA-1: b28e5304fe5c198ae50125e96e9eccf4d0030063 SHA-256: 36412eec50d33d5f671140134af4cf0ecd4fc91e389a0ef130a8ef533abc7045
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many of which point to external resources. One critical heuristic identified a malicious redirector link, suggesting the primary purpose is to lure users to malicious content. The document body itself is heavily obfuscated and contains the malicious URL, reinforcing the attack pattern.

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=critical+ops+mod+apk+android+oyun+cl
    • https://cdn.shopify.com/s/files/1/0431/4441/3350/files/technical_architect_resume_format.pdf
    • https://cdn.shopify.com/s/files/1/0432/2079/5556/files/worksheet_for_grade_1_reading.pdf
    • https://cdn.shopify.com/s/files/1/0433/6710/4668/files/6890884839.pdf
    • https://cdn.shopify.com/s/files/1/0439/3431/8760/files/77190872345.pdf
    • https://static.usrfiles.com/ugd/b8c837_58400738a5444c03b9bd897b23fad792.pdf
    • https://static.usrfiles.com/ugd/5cf23b_2f9eab545cec4a018236bd068f93ed82.pdf
    • https://static.usrfiles.com/ugd/739437_b9ab971d17054914abb3ff2d42798717.pdf
    • https://static.usrfiles.com/ugd/b8c837_cc3593a299b44a2798f240f0b686a572.pdf
    • https://static.usrfiles.com/ugd/33c377_31b82ea135b44dfa8181ac312c78b165.pdf
    • https://static.usrfiles.com/ugd/b8c837_c73295986d444f3382ac896738b636b8.pdf
    • https://cdn.shopify.com/s/files/1/0459/2258/2679/files/boritap.pdf
    • https://cdn.shopify.com/s/files/1/0435/5004/8420/files/gta_vice_city_aptoide_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0428/9029/7507/files/38357209067.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_off000057df.bin
035cff219c4aa1e86c15f352ff166ad668f4c3b2bff67c3534e403d3445dcf79		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57DF 5288 bytes
font_01_sfnt_off000069c0.bin
f178d8047567b3bdc215a557e5f36ddb9ee1a098e724563e121fe997a7f32818		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69C0 9992 bytes

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