Malicious PDF — malware analysis report

Static analysis result for SHA-256 c148f6aed5709a7c…

MALICIOUS

PDF

44.9 KB Created: 2020-08-13 21:45:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 830d1023a59b66d0e1b4699f910512ea SHA-1: 1c0996845c74600db4a9bc36d21e138a2fd7bd25 SHA-256: c148f6aed5709a7c75d19c967964cd0a1a78a92b451f15f99689635a0a5b635e
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one heuristic identifying it as a PDF link farm. Another heuristic flags a link to a known malicious redirector. The document body contains text related to 'Assistance dentaire formation montreal' and includes the URL 'https://ttraff.ru/pify?keyword=assistance+dentaire+formation+montreal', suggesting a lure to a potentially malicious site. No scripts were extracted from this sample.

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.ru/pify?keyword=assistance+dentaire+formation+montreal
    • http://files.thesilkveil.com/uploads/1/3/2/7/132710627/zugefa.pdf
    • http://tatew.midwestresourcesolutions.com/uploads/1/3/1/1/131163599/2826748.pdf
    • http://files.australiantimberflooring.com/uploads/1/3/1/8/131856009/3506495.pdf
    • http://files.christaresources.com/uploads/1/3/0/7/130775679/ef98c361f57ab1a.pdf
    • http://files.mballew.com/uploads/1/3/1/4/131452740/xadinajexejomuxenes.pdf
    • https://cdn.shopify.com/s/files/1/0435/2039/3380/files/history_of_banking_system_in_nigeria.pdf
    • https://cdn.shopify.com/s/files/1/0435/6567/8755/files/wisexesupokipebikut.pdf
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/tevij.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/biochemistry_satyanarayana_5th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1189/9545/files/wobefotuni.pdf
    • https://cdn.shopify.com/s/files/1/0429/6127/2983/files/divusekugolobemafozej.pdf
    • https://cdn.shopify.com/s/files/1/0433/0071/6694/files/blues_chords_guitar.pdf
    • https://cdn.shopify.com/s/files/1/0432/8253/0472/files/4425416730.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/40646889144.pdf
    • https://cdn.shopify.com/s/files/1/0432/1358/6596/files/ielts_british_council_books_download.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_off00006c74.bin
bc26633983af1e8e1e2128387a0d539b7ceb6d1eb7cdae579af81948d7ef99f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C74 5156 bytes
font_01_sfnt_off00007dd5.bin
bcfe521c30a341cf7cc13e007c3d3e67135e0ea854c8b3ef1a6c9921615397ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD5 12436 bytes

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