Malicious PDF — malware analysis report

Static analysis result for SHA-256 13f366c4f7429ee8…

MALICIOUS

PDF

42.3 KB Created: 2020-08-29 04:39:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5bb3a08d4524fd00f56dbc365a178281 SHA-1: 3686d051a57f094ed722e05b5194cc36e9d90077 SHA-256: 13f366c4f7429ee853965b8e7b1a1bc31ae0b928086f327af9e392fcc48fb2a4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at ttraff.com. The document body, though corrupted, appears to be a lure for a 'Ford 5030 service manual'. This suggests a phishing or scam attempt where users are tricked into clicking malicious links. No scripts were extracted from this sample.

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=ford+5030+service+manual
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0427/7259/4844/files/37759276239.pdf
    • https://cdn.shopify.com/s/files/1/0434/5973/9814/files/96775521996.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1031/files/operation_research_assignment_problem.pdf
    • https://static.usrfiles.com/ugd/b8c837_f63fa5da256941cfae0d6e715e33bf67.pdf
    • https://static.usrfiles.com/ugd/b8c837_21fe94e3d5a3497fb541548c99922b70.pdf
    • https://static.usrfiles.com/ugd/b8c837_2a84e3cf8b1843ffa0db26a71b05c1a8.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5b28534d826456db19f75b76b90f09a.pdf
    • https://static.usrfiles.com/ugd/b8c837_67212efc73d74239844be4f70bcf6f48.pdf
    • https://static.usrfiles.com/ugd/b8c837_73f4755f986e43098322ccb81b6df92a.pdf
    • https://static.usrfiles.com/ugd/b8c837_a58955b17278475283872132fe14e640.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ed4e5c9e25a441da7a1e67086ae9b1a.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ae2582386cf4e27979301d401409196.pdf
    • https://static.usrfiles.com/ugd/b8c837_7d9c1b7c5fdc412f8793aac7ea0c75cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_597334cfbf8640bda3fc95b1db107224.pdf
    • https://static.usrfiles.com/ugd/b8c837_016fe89a5c6f48dd88ed8aa3cbc97484.pdf
    • https://static.usrfiles.com/ugd/b8c837_65e21b207f954b5aa20bf575f0bf44ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_0ec49a0ee4824ad0905838b2e0b8662a.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_off00006899.bin
2e69a5eaceb84b428737b8e4e96b5bd037522f6c68794d6ef0b1ee4ee2284832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6899 5528 bytes
font_01_sfnt_off00007b54.bin
7a5291f77f456a7df52486a44fd1a21d7802460c29d5f5feab56e032161a7a8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B54 9888 bytes

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