Malicious PDF — malware analysis report

Static analysis result for SHA-256 569b1e34a71e601a…

MALICIOUS

PDF

47.2 KB Created: 2020-08-31 22:48:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3e8e1f8ea79f55d22f9f98798d6f29c8 SHA-1: 2b34a19b9a5ad2bcbb217c8c6bf8d51c3c3a37b7 SHA-256: 569b1e34a71e601a48fe9e3f9dd1f13026e643afaa03112cd1e9214571370356
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one heuristic specifically identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'Cisco nexus 9000 series hardware installation guide' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of a link farm heuristic further supports the malicious intent of distributing links.

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=cisco+nexus+9000+series+hardware+installation+guide
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/7079506762.pdf
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/isotropic_elasticity.pdf
    • https://cdn.shopify.com/s/files/1/0433/8827/2805/files/98048900231.pdf
    • https://static.usrfiles.com/ugd/b8c837_49125088aa2249d98fcd5d7697daa921.pdf
    • https://static.usrfiles.com/ugd/d9d1f5_521167abd9654b4eafc83db18d08d7fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_99498311b6fe4177a52bf326ed73f1b1.pdf
    • https://cdn.shopify.com/s/files/1/0435/4542/8127/files/rorobilematubelafegilag.pdf
    • https://cdn.shopify.com/s/files/1/0428/0903/2863/files/78244153084.pdf
    • https://cdn.shopify.com/s/files/1/0446/9764/9306/files/guardian_ape_second_fight_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/5671/7205/files/chemistry_form_4_chapter_9_full_notes.pdf
    • https://static.usrfiles.com/ugd/544c7e_40858e85e5d046898e6d0ec7a0c6efd3.pdf
    • https://static.usrfiles.com/ugd/b914b5_b7b0d33b6421414ea8cb6bbf38c9a741.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_off00006dd1.bin
f4e852a17afc1639ab0c840952573fb368dd7b53e01bd427ab067280373f49c4
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD1 5564 bytes
font_01_sfnt_off000080cc.bin
8e21349fc59677a660bd8850db6180bdb72119ce108f77d4f26a7738c0d8ff2c
pdf-font-stream PDF embedded font (sfnt) at offset 0x80CC 15188 bytes