Malicious PDF — malware analysis report

Static analysis result for SHA-256 56af4a213136b5fd…

MALICIOUS

PDF

39.4 KB Created: 2020-08-31 19:00:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b70204f122e0e6fc8f748df80d84fc0b SHA-1: 2b6b7535a5d7d54c0549f8263b168798b689dce0 SHA-256: 56af4a213136b5fdcd7de356236bce081001f198ae6647d67583d37fb2449d33
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded URLs, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the link at https://ttraff.com/wix?keyword=bodybuilder+hd+wallpapers++for+phone points to known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests the document is designed to host a large number of external links, likely for SEO manipulation or to distribute further malicious content. The ML classifier also strongly flagged this PDF as malicious.

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/wix?keyword=bodybuilder+hd+wallpapers++for+phone
    • https://static.usrfiles.com/ugd/b8c837_942c5375e538440f8284ddcaf11f1afd.pdf
    • https://static.usrfiles.com/ugd/0049ca_af5cf7cf306243ef9796bc3aeb73daf6.pdf
    • https://static.usrfiles.com/ugd/a107db_3365ca8b8bf342259602c7a52fcdd832.pdf
    • https://static.usrfiles.com/ugd/b8c837_3ff9788c1ca747e0bfb57631ec50b7d4.pdf
    • https://static.usrfiles.com/ugd/c0b427_2737361f78a84a5f8e1b50d65091d8af.pdf
    • https://static.usrfiles.com/ugd/87fdc7_2704cc46973346ceb1058c51d635cf9e.pdf
    • https://static.usrfiles.com/ugd/b8c837_aafe7d4a9c8c49fa97a38022815f22f7.pdf
    • https://static.usrfiles.com/ugd/b8c837_da9089b82e744d2498ab6fadc3cd9248.pdf
    • https://cdn.shopify.com/s/files/1/0437/7804/8151/files/big_ideas_math_algebra_1_student_journal_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/boise_tv_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/85947343199.pdf
    • https://cdn.shopify.com/s/files/1/0435/1806/6842/files/zesibolepo.pdf
    • https://cdn.shopify.com/s/files/1/0431/3156/8290/files/furepuzewiwixafodukake.pdf
    • https://cdn.shopify.com/s/files/1/0433/8748/6358/files/world_history_william_j_duiker.pdf
    • https://cdn.shopify.com/s/files/1/0438/2756/0610/files/beposepi.pdf
    • https://cdn.shopify.com/s/files/1/0433/1926/3397/files/visimuguze.pdf
    • https://cdn.shopify.com/s/files/1/0431/4886/9789/files/ketovufimedosizisidim.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/xidizeguvukaxi.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_off0000501c.bin
59773ba18a442da6d2e1f06f7c6025246c5fb93896abf27fe83bb0d8f99035b1
pdf-font-stream PDF embedded font (sfnt) at offset 0x501C 5512 bytes
font_01_sfnt_off000062e6.bin
7007b32f546174a73e41318fcb0acc0b67f88ae54622b85229636c538e9bcc2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x62E6 13880 bytes