Malicious PDF — malware analysis report

Static analysis result for SHA-256 c54d2ff222153cc3…

MALICIOUS

PDF

43.6 KB Created: 2020-07-10 08:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f11b268489de4e22c13ce4bb42ca6c08 SHA-1: 9a496ba62ae133df25f21ba092d182e81d404b81 SHA-256: c54d2ff222153cc3aa828e8715ea17349fbc43ac57f69122d602a05ee369b988
130 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, including one identified as a malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'job circular'. The presence of a mass external PDF link farm indicates an attempt to distribute malicious content or engage in SEO manipulation for phishing. The primary malicious link identified is https://ttraff.ru/wb?keyword=non%20cadre%20job%20circular%20pdf.

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.ru/wb?keyword=non%20cadre%20job%20circular%20pdf
    • http://files.precisioniceandsnow.com/uploads/1/3/1/4/131409024/ziwogugokakigumuki.pdf
    • http://files.denisejeanphotography.com/uploads/1/3/1/1/131164311/votusoligizira_fabebixoz_wodozub_peboxaxab.pdf
    • http://files.johnhayalumni.com/uploads/1/3/0/7/130739427/72d079edbd.pdf
    • http://files.bellebookandcandle.org/uploads/1/3/0/7/130775232/4e66a270902a.pdf
    • http://files.lisamccafferty.com/uploads/1/3/1/3/131383664/bamibitamurata.pdf
    • http://files.koaguitarsets.com/uploads/1/3/0/9/130969562/defafujawusulid.pdf
    • http://files.jadefernandes.com/uploads/1/3/1/4/131454272/dufewowakunut-xovigazujobuso.pdf
    • http://files.buffalotimberbay.org/uploads/1/3/0/7/130739343/vujewerowegukaf-tetevimitaxu-zigutu-nukena.pdf
    • http://files.jackwebbperformance.com/uploads/1/3/0/7/130775111/webubuwu-kowijixu.pdf
    • http://files.bernardcassiere.fi/uploads/1/3/0/9/130969607/pipoluwi-togobafolixex-xesuwa-fadul.pdf
    • http://files.drewbreder.com/uploads/1/3/0/7/130738507/9066bddd4.pdf
    • https://jefekofegupu.files.wordpress.com/2020/06/noxobubuzawufedobagiwis.pdf
    • https://mozujunovuj.files.wordpress.com/2020/06/18201272494.pdf
    • https://zuxaxite.files.wordpress.com/2020/07/jesowebitevubilatatolunuz.pdf
    • https://wafujevu.files.wordpress.com/2020/06/bonutazes.pdf
    • https://xarinigeted.files.wordpress.com/2020/06/zokenowidifirobesoba.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/64830269039.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/68905528383.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/puneson.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lojuxefututa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/86556218032.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_off00006c23.bin
e945e93b2a2e8fa73dec29b4ca93f59efdf82315b8ac2216c7bd4a4e39109d8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C23 4956 bytes
font_01_sfnt_off00007d01.bin
125fd1dd4baddde90823a5a794834d9891515f10b04c50f445f2b544ae097492		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D01 11000 bytes

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