Malicious PDF — malware analysis report

Static analysis result for SHA-256 294c08c967fc0024…

MALICIOUS

PDF

44.3 KB Created: 2020-08-31 12:22:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cfa745b2b7665842fab06bd31d9bc9c9 SHA-1: 36f3e864883a3c621ff5ae5c34b7d11f4a959102 SHA-256: 294c08c967fc0024b4584471bc2e45c67ce242647f7c30ef2c83062b79d4431e
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to external PDF files hosted on Shopify and static.usrfiles.com, which is indicative of a link farm. One of the primary links, 'https://ttraff.me/wix?keyword=de+personnalit%25C3%25A9+isfp+personnalit%25C3%25A9', is flagged as a malicious redirector. This suggests the document is designed to lure users into clicking these links, potentially leading to phishing sites or malware downloads.

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.me/wix?keyword=de+personnalit%25C3%25A9+isfp+personnalit%25C3%25A9
    • https://cdn.shopify.com/s/files/1/0432/4930/3720/files/nakovinus.pdf
    • https://cdn.shopify.com/s/files/1/0438/2323/5234/files/allahabad_high_court_ro_syllabus.pdf
    • https://cdn.shopify.com/s/files/1/0436/6086/9785/files/castrol_10w40_magnatec.pdf
    • https://cdn.shopify.com/s/files/1/0433/9433/4869/files/xazipego.pdf
    • https://static.usrfiles.com/ugd/3f0e57_fff84c2d6e074387a9e592d163ea7639.pdf
    • https://static.usrfiles.com/ugd/87d215_040b5a70bd1f43a3b977cabe01ac9b6d.pdf
    • https://static.usrfiles.com/ugd/2b25b5_9f8db86e1c0647bba28acf28328bb67f.pdf
    • https://static.usrfiles.com/ugd/a6e5e9_0d0add532ae5426ba306311f55c3a0d7.pdf
    • https://static.usrfiles.com/ugd/b8c837_0e2117e68b004dbc897498a972b48566.pdf
    • https://static.usrfiles.com/ugd/5cf23b_9c1967b358b54032805f0290e099e911.pdf
    • https://static.usrfiles.com/ugd/b8c837_c348125c14e743af95484c08f42a5667.pdf
    • https://static.usrfiles.com/ugd/fbccce_de10e518ef1c4dd08fdbe6ed4c002d5a.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_off00006c7a.bin
0c47f2823534d89fdb45d8a0204e094bfd08137ea3de9a2626e11eb5426698fa
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C7A 5036 bytes
font_01_sfnt_off00007d65.bin
611375fb0a458141e2fb16abe0ecb3c07910409ecbf1e8d400ea33be9554ecd4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D65 11688 bytes