Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d02376400d947f5…

MALICIOUS

PDF

101.5 KB Created: 2020-08-18 22:55:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 73a88bbc753cf10a19f99b4b0b2e54a5 SHA-1: 04ba3d717942a14a64fc0bc1289d09b10ce10a5c SHA-256: 4d02376400d947f5780f24622cc1aee50d10a80819f4b09d4902950d897e04e8
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=ada+inpatient+diabetes+guidelines+2018'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a PDF link farm heuristic further suggests an attempt to manipulate search engine results or distribute content through multiple links. While no scripts were extracted, the embedded URLs and the nature of the heuristics strongly suggest a phishing or redirection attack.

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.cc/pify?keyword=ada+inpatient+diabetes+guidelines+2018
    • http://files.designhur.com/uploads/1/3/0/7/130776639/gipesagakosadal.pdf
    • http://dewiwofa.prestigepropertiesph.com/uploads/1/3/2/6/132695742/50c0d3.pdf
    • http://durel.sansburymedical.com/uploads/1/3/1/1/131164366/5818276.pdf
    • http://files.loveforellie.com/uploads/1/3/2/8/132815183/c51903fa.pdf
    • https://cdn.shopify.com/s/files/1/0429/1821/5846/files/86653140682.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/naduz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5491/4981/files/autocad_underlay_slow.pdf
    • https://cdn.shopify.com/s/files/1/0431/9897/2066/files/25560981378.pdf
    • https://cdn.shopify.com/s/files/1/0431/5961/7690/files/51110462031.pdf
    • https://cdn.shopify.com/s/files/1/0434/1828/8284/files/functional_english_grammar_and_composition.pdf
    • https://cdn.shopify.com/s/files/1/0428/5428/5479/files/jujokewutakerefuwalodeje.pdf
    • https://cdn.shopify.com/s/files/1/0433/0445/2246/files/65648066099.pdf
    • https://cdn.shopify.com/s/files/1/0427/4647/8758/files/99531696624.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_off0001445e.bin
95dec5438e067b53920792a447c882bc32ced007159e28b1d4e471b88670113a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1445E 5680 bytes
font_01_sfnt_off000157b6.bin
5a97b548b5965fa7762b739aed41744a5543e999f22601dd385c87cab137a4ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x157B6 15972 bytes

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