Malicious PDF — malware analysis report

Static analysis result for SHA-256 466d97a7418499db…

MALICIOUS

PDF

55.4 KB Created: 2020-08-22 16:11:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4af023745e837963015c5975ed276f77 SHA-1: 0ab557594ce07de3b0fdba9af9ec501053815734 SHA-256: 466d97a7418499db7df3dcd01e0514f1d60fa5e4938b39649a74bbf1aa40d1d7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic. One critical heuristic identified a link to a known malicious redirector, traff.cc, which likely serves as a gateway to malicious content. The document body itself is heavily corrupted but contains the same redirector URL and several Shopify URLs.

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.cc/pify?keyword=bacilos+gram+positivos+tratamiento+pdf
    • http://files.nadlan-haarris.com/uploads/1/3/1/4/131407106/7084607.pdf
    • https://cdn.shopify.com/s/files/1/0432/9085/3531/files/fafetapenuj.pdf
    • https://cdn.shopify.com/s/files/1/0432/5569/3470/files/singular_and_plural_irregular_nouns_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/egyptian_cotton_sheet_set_review.pdf
    • https://cdn.shopify.com/s/files/1/0433/3246/8890/files/tarefiparekerebuxum.pdf
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/bois_de_boulogne_map.pdf
    • https://cdn.shopify.com/s/files/1/0447/9755/8941/files/laseritusogubelitowosur.pdf
    • https://cdn.shopify.com/s/files/1/0427/9812/1119/files/bancales_elevados.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/89756011586.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/74832969368.pdf
    • https://cdn.shopify.com/s/files/1/0434/0213/3667/files/lelepives.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_off000096c8.bin
be9aee677cd469bd81d881367bf5cc03541fce7cfbc48eaf4b529d1125c7cba4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96C8 5584 bytes
font_01_sfnt_off0000a9af.bin
833a1654c734e75b926feac1b2d0586dc06bae4775b5495fd930920d945c92ec		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA9AF 11760 bytes

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