Malicious PDF — malware analysis report

Static analysis result for SHA-256 29259e8294b2eb67…

MALICIOUS

PDF

40.9 KB Created: 2020-08-09 13:05:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71d3035e40af16e068c0bb2a45e4fb76 SHA-1: 59488f12adfba46430286d2895c098ff1049be97 SHA-256: 29259e8294b2eb67c919870cb493e600ee1957b368f09f9ec12fc8021a6716ee
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used to create SEO spam or redirect users to malicious sites. One critical heuristic firing indicates a direct link to a known malicious redirector at https://ttraff.com/pify?keyword=capacitors+explained+pdf. The document body, though heavily obfuscated, also contains this URL and other PDF links, reinforcing the link farm attack pattern. 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.com/pify?keyword=capacitors+explained+pdf
    • http://files.phoenixyouthfc.com/uploads/1/3/0/7/130776037/6047911.pdf
    • http://files.abelenepark.com/uploads/1/3/1/4/131406505/cffa6a8edf.pdf
    • http://files.koshishpanindia.com/uploads/1/3/0/7/130776241/a49eef129f7d8.pdf
    • http://files.biographyofanobody.ca/uploads/1/3/1/4/131406960/motopek_zefumivuzafanuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/8402/9854/files/4602358560.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4977/files/mubozuvu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5122/9089/files/zasawoma.pdf
    • https://cdn.shopify.com/s/files/1/0430/0737/7561/files/gobufiros.pdf
    • https://cdn.shopify.com/s/files/1/0432/0002/0635/files/wexewutogixuxezataga.pdf
    • https://cdn.shopify.com/s/files/1/0428/6965/3663/files/89328358849.pdf
    • https://cdn.shopify.com/s/files/1/0430/8362/8697/files/55616291922.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/agua_de_beber_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0432/7306/0520/files/blueprints_neurology_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67641838088.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_off00006464.bin
1bbefa0c5b4bce5d5558af025c2a22ff4e4dbb5157e0d4368a61de4dca73139d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6464 5124 bytes
font_01_sfnt_off000075dd.bin
4fd8ebe2fddad0013297df6c90713356aaedab45b3f2b1c79acf6c202f74abfc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75DD 9612 bytes

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