Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e21595778e2bcf3…

MALICIOUS

PDF

43.2 KB Created: 2020-08-21 07:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 65994f1c357b9a2aa6b5f8a0c3f3b666 SHA-1: fb7f8fbd62711841a1774752d57be02d78798199 SHA-256: 3e21595778e2bcf3d3f63411da25d20dc83b011963d1940f2510b7cf4e45fdd9
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though partially corrupted, suggests a lure related to 'broiler chicken feeding schedule pdf'. The primary malicious URL identified is https://ttraff.ru/pify?keyword=broiler+chicken+feeding+schedule+pdf, which likely serves as a gateway to further malicious content. The presence of many Shopify links, some confirmed benign, suggests an attempt to blend in with legitimate content while directing users to malicious sites.

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/pify?keyword=broiler+chicken+feeding+schedule+pdf
    • http://puwup.dominicrohangates.com/uploads/1/3/2/3/132302815/kevapirulejofozomip.pdf
    • https://cdn.shopify.com/s/files/1/0431/1223/5174/files/53023118151.pdf
    • https://cdn.shopify.com/s/files/1/0437/3993/8970/files/vcftools_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/3040/4506/files/caterpillar_iso_9001_certification.pdf
    • https://cdn.shopify.com/s/files/1/0431/8032/7070/files/17788784253.pdf
    • https://cdn.shopify.com/s/files/1/0428/1889/6038/files/521996383.pdf
    • https://cdn.shopify.com/s/files/1/0433/5897/8207/files/tumotawalizamatemijodugal.pdf
    • https://cdn.shopify.com/s/files/1/0428/2528/5791/files/21144854212.pdf
    • https://cdn.shopify.com/s/files/1/0436/8397/1237/files/vogegaxugugupanekij.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_off00006b4c.bin
89930105a3eb5195ea3fe2ba5a50d89ba73156b663a7c8087e9a29214a93308c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4C 5320 bytes
font_01_sfnt_off00007d62.bin
97c1cb99cc2fc5499f9ce57c171e926f29d93f0b57e423d3011dd4bc6324bbde		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D62 10228 bytes

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