Malicious PDF — malware analysis report

Static analysis result for SHA-256 f96302186e41375e…

MALICIOUS

PDF

44.3 KB Created: 2020-08-30 06:49:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2a8a7d2f0b94eac72e8b7801941c50e4 SHA-1: 8105d4211acc8f4b5490fa1bf5250ca35710c199 SHA-256: f96302186e41375e98a28010be2d8c7b47b8ba00750502887c31bb26cd5ee0da
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a 'Banting 7 day meal plan pdf download' and the malicious URL. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of the file. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a link farm, likely for SEO manipulation or to distribute malicious links.

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/wix?keyword=banting+7+day+meal+plan+pdf+download
    • https://static.usr
    • https://static.usrfiles.com/ugd/238140_c2990854e2034774909b018f69cc61a7.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_5e7a794f3c414d7ab1ad8ffe3ac041e1.pdf
    • https://static.usrfiles.com/ugd/eaf48f_24241f7cc824418f85b36318c598452a.pdf
    • https://static.usrfiles.com/ugd/b8c837_bae23e2e29b547b5882d7f2f97ed95bf.pdf
    • https://static.usrfiles.com/ugd/b11f6d_a699436a75734cba9fa3812169336f1f.pdf
    • https://cdn.shopify.com/s/files/1/0439/9398/9278/files/who_formed_the_anti_federalist_party.pdf
    • https://cdn.shopify.com/s/files/1/0430/8634/8450/files/80123745491.pdf
    • https://cdn.shopify.com/s/files/1/0435/6436/8021/files/powerbeats_pro_price.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5902/files/labojuxiluwapugux.pdf
    • https://cdn.shopify.com/s/files/1/0433/2018/0894/files/58029687671.pdf
    • https://static.usrfiles.com/ugd/ac51ce_6a15e2380188486aada3b53ffb9ef87c.pdf
    • https://static.usrfiles.com/ugd/ae15ca_f803269edb764d3e8e1de773cf550c58.pdf
    • https://static.usrfiles.com/ugd/6d59ab_ebaa2bd3a19c4703a762e26a395b4310.pdf
    • https://static.usrfiles.com/ugd/529dbf_553d50a80b904aa1bbe1d0bdbb534f19.pdf
    • https://static.usrfiles.com/ugd/12f4eb_1508289d06c849fba0f52f9707624a97.pdf
    • https://static.usrfiles.com/ugd/b8c837_5941800d48d84f419c6aca8870b62f18.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_off00006f16.bin
66df500724553486c357944a6160ba1df1f347f1ac3e84259d73479626b4c3f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F16 5412 bytes
font_01_sfnt_off0000818f.bin
9c55472f6e802354fee88818e218b46a8f9390173ecb7f49013646ba315400ff		 pdf-font-stream PDF embedded font (sfnt) at offset 0x818F 10044 bytes

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