Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b59966caba9d3b…

MALICIOUS

PDF

33.7 KB Created: 2020-08-12 08:17:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9d66e1aa44bbd9a0224b3480aaf97d13 SHA-1: de7783ea1e88c6c92ab8fa6cdbf45ee0c7a08448 SHA-256: b6b59966caba9d3b6ffdd9c3fe582d52955070c157079aac0ea3cb434b2c6e00
128 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, including one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates the primary link leads to known malicious infrastructure. Additionally, the 'SE_DOWNLOAD_BUTTON' heuristic suggests a lure to trick the user into clicking, which is further supported by the presence of a call-to-action phrase in the document body. The document appears to be a link farm designed to redirect users to potentially harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.cc/wb?keyword=exercises%20simple%20past%20and%20past%20progressive%20pdf
    • http://voxazazug.nadiaballan.com/uploads/1/3/1/1/131164250/963522bf46.pdf
    • http://files.robertsiteach.org/uploads/1/3/1/4/131437702/485eaad6737458.pdf
    • http://files.ponting.ca/uploads/1/3/0/7/130776267/f2f6d79f94ab7.pdf
    • http://fodit.hisheritage.net/uploads/1/3/0/9/130969656/f6e8a24e.pdf
    • http://files.marketmovesmatt.com/uploads/1/3/0/8/130874629/nuvigure-bufagejiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/4196/4710/files/xupuzejadojagipinevuvaz.pdf
    • https://cdn.shopify.com/s/files/1/0439/4044/6366/files/lindsey_stirling_torrent.pdf
    • https://cdn.shopify.com/s/files/1/0428/9599/9129/files/binagavat.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1650/files/rititevufilobiwozivulu.pdf
    • https://cdn.shopify.com/s/files/1/0432/7066/8453/files/wimagowolaro.pdf
    • https://cdn.shopify.com/s/files/1/0432/7781/1867/files/monografia_sobre_el_cambio_climatico.pdf
    • https://cdn.shopify.com/s/files/1/0437/7706/5121/files/aditya_hridaya_stotra_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0435/2344/0792/files/public_policy_lecture_notes.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/catalogo_ikea_cocinas_2020.pdf
    • https://cdn.shopify.com/s/files/1/0434/5928/1061/files/31391208242.pdf
    • https://cdn.shopify.com/s/files/1/0430/6662/2106/files/bofexepasitizodefuvoki.pdf
    • https://cdn.shopify.com/s/files/1/0440/6856/9238/files/rosoxotefixapode.pdf
    • https://cdn.shopify.com/s/files/1/0434/1936/9628/files/busta_rhymes_net_worth.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_off0000469d.bin
71e1793ebe1148ee3b805a2e5e39e5176304af88879acdc44c1d30800f7e8395
pdf-font-stream PDF embedded font (sfnt) at offset 0x469D 5560 bytes
font_01_sfnt_off00005977.bin
9147638749d0e49cacb567306786588beb9113d5b6c362d737dedf0050914772
pdf-font-stream PDF embedded font (sfnt) at offset 0x5977 9452 bytes