Malicious PDF — malware analysis report

Static analysis result for SHA-256 059a2e5c00052a08…

MALICIOUS

PDF

40.9 KB Created: 2020-08-17 01:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1de1082e5def8057ee1c0bd911e088fa SHA-1: 3e8298a46747568fa69cb37eb110ed828e7c5373 SHA-256: 059a2e5c00052a088862556d986a7ba497d2ab20099f53f1d26f8bbd5ca14013
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to `ttraff.com`, identified as a malicious redirector. It also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The primary attack pattern involves directing users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=create+your+personal+travel+guide
    • http://genami.apexcoachingsolutions.com/uploads/1/3/1/1/131164250/tifafodotejokere.pdf
    • http://files.coxevolab.org/uploads/1/3/1/3/131380733/b435077a189.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/1238/2116/files/36370160205.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7064/files/myrtle_beach_south_carolina_surf_report.pdf
    • https://cdn.shopify.com/s/files/1/0438/2962/4992/files/20032294706.pdf
    • https://cdn.shopify.com/s/files/1/0432/3803/1518/files/sozogaditov.pdf
    • https://cdn.shopify.com/s/files/1/0430/1701/1353/files/56993700345.pdf
    • https://cdn.shopify.com/s/files/1/0432/9635/8565/files/kubatoza.pdf
    • https://cdn.shopify.com/s/files/1/0436/0998/1085/files/wusoluwimetumuze.pdf
    • https://cdn.shopify.com/s/files/1/0431/6551/5933/files/gobimobimof.pdf
    • https://cdn.shopify.com/s/files/1/0436/7053/6345/files/83787070620.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5682/files/biosafety_guidelines_for_gmo_ppt.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006226.bin
83719a0e02bb4c5a3a9a41ef32ff703dbeba1e44c4cbe971f992f4e8eccc8d4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6226 5196 bytes
font_01_sfnt_off000073e6.bin
2de1efecfcb5f7db89ed5800ce6b33ce354c56dda6e76739bc8bac22a430e86f
pdf-font-stream PDF embedded font (sfnt) at offset 0x73E6 10400 bytes