Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcafc824a15a2b9e…

MALICIOUS

PDF

62.5 KB Created: 2020-08-18 19:50:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e79460431db00d816a6983967fc9b91 SHA-1: 1c4f7515550f05d0a695181b2a7f92ec3f9d6386 SHA-256: dcafc824a15a2b9ea6310b39bc3c4dd3b497ef5a62629911ba5e0bd3809a93e4
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The embedded URL `https://ttraff.com/pify?keyword=catahoula+cur+dog+information` is identified as a malicious redirector. The document body contains numerous links, many pointing to Shopify domains, but the primary malicious intent appears to be the redirection through the ttraff.com URL.

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/pify?keyword=catahoula+cur+dog+information
    • http://files.virginiateacompany.com/uploads/1/3/2/7/132741339/2aea96.pdf
    • http://files.aniasorganics.com/uploads/1/3/0/7/130775588/suwekekazove-riroxiv-notekaji.pdf
    • http://files.missycampmusic.com/uploads/1/3/1/0/131070851/wibozow-tozatuli-dibisujovus.pdf
    • http://fabogoze.clearlightastrology.com/uploads/1/3/0/8/130874330/39ea36bd2fd8b7.pdf
    • http://files.gvramigos.com/uploads/1/3/1/4/131408772/xadipimusomi-rimejiwimot-mubewe.pdf
    • https://cdn.shopify.com/s/files/1/0439/9765/9294/files/osteoporosis_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/48618015626.pdf
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/cabala_calculo_del_arbol_de_la_vida.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/84407481133.pdf
    • https://cdn.shopify.com/s/files/1/0448/2108/6368/files/adverse_reaction_to_metformin_icd_10.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/dojedeteremedadedarovir.pdf
    • https://cdn.shopify.com/s/files/1/0431/7341/3032/files/12894884620.pdf
    • https://cdn.shopify.com/s/files/1/0434/4889/3606/files/miguel_de_cervantes_don_quixote.pdf
    • https://cdn.shopify.com/s/files/1/0431/3448/4648/files/zotivijipenojod.pdf
    • https://cdn.shopify.com/s/files/1/0436/5549/5833/files/70755860745.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_off0000b87d.bin
0f88c36d620a69dfbc65904e49b4fc05f49fd0dc8cb9de56c697554dcd4300e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB87D 5164 bytes
font_01_sfnt_off0000c9de.bin
dea9143a73e4aa9445c4fd8f38799e4ea629e5af994c9d562456722c185d155b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC9DE 10420 bytes

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