Malicious PDF — malware analysis report

Static analysis result for SHA-256 d346741080880539…

MALICIOUS

PDF

46.9 KB Created: 2020-08-19 02:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83be18a966882da71e86e1ac2a57c70f SHA-1: fc021020a7f439af5dfaabda6834dc834efe9066 SHA-256: d34674108088053989080ec6fa227d9882e17ceafef034cf649ad1eee5a9a973
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains numerous links, including one pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a lure related to a 'kern interventional cardiology handbook pdf' and includes the malicious URL. This indicates a phishing attempt designed to redirect users to harmful content.

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=kern+interventional+cardiology+handbook+pdf
    • http://files.wirtartalk.org/uploads/1/3/0/7/130775286/eb195ff7971387.pdf
    • http://files.herbcareus.com/uploads/1/3/1/6/131607075/223e611e7efa.pdf
    • http://xodada.snowfirehollow.com/uploads/1/3/1/0/131070450/d0ae5f1e.pdf
    • https://cdn.shopify.com/s/files/1/0433/8191/5804/files/gagot.pdf
    • https://cdn.shopify.com/s/files/1/0450/8683/4851/files/tugapukonijobofexamaviw.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/medea_euripides_gredos.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/51439136821.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/6906983577.pdf
    • https://cdn.shopify.com/s/files/1/0437/5078/5173/files/74345716355.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/zefatelegoveletinumaru.pdf
    • https://cdn.shopify.com/s/files/1/0434/2713/5640/files/77422942232.pdf
    • https://cdn.shopify.com/s/files/1/0428/1293/2255/files/xevotigi.pdf
    • https://cdn.shopify.com/s/files/1/0433/9249/9877/files/absorption_chiller_catalogue.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13879903487.pdf
    • https://cdn.shopify.com/s/files/1/0431/4651/0504/files/jokatalexenulojajel.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_off00007809.bin
2d3d58c146ddbe751058314d3d0fa847faeffe12e9a69977dd129ed1e209313d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7809 5572 bytes
font_01_sfnt_off00008b03.bin
80937c3c157ef4afe0833b089d83f40c11292c3d187a513674ce67bca18cb1f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B03 10592 bytes

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