Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9a4492aba8de519…

MALICIOUS

PDF

46.5 KB Created: 2020-08-13 17:40:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 862d84fc059c7a7910ef4b46d2ded985 SHA-1: ab555b7ee84b1f77ae8169497d40899b18444263 SHA-256: c9a4492aba8de5194a4298018738ad86263cb96ae141c0a301fa6ddab7e54ad9
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large collection of external PDF links, suggesting an attempt to create a link farm or distribute content through numerous domains. The presence of the malicious redirector URL points towards a phishing or malware distribution scheme.

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/wb?keyword=statutory%20arbitration%20pdf
    • http://rubodet.mowaxdiscography.com/uploads/1/3/1/4/131437709/febumibidokubiz_gogepuler_jarewepa_pomapoji.pdf
    • http://files.erinboake.com/uploads/1/3/1/1/131164452/e7d45194fa92c.pdf
    • http://files.preservemanhattan.org/uploads/1/3/1/1/131164156/1e9e823a175b9.pdf
    • https://cdn.shopify.com/s/files/1/0431/7016/8986/files/noxamomisoki.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2860038855.pdf
    • https://cdn.shopify.com/s/files/1/0430/8090/8949/files/gumakojuja.pdf
    • https://cdn.shopify.com/s/files/1/0438/6720/9883/files/ethical_considerations_in_secondary_research.pdf
    • https://cdn.shopify.com/s/files/1/0436/9419/4843/files/megoriki.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/detosibemovevixopenuvalam.pdf
    • https://cdn.shopify.com/s/files/1/0428/7502/7619/files/diy_parts_washer.pdf
    • https://cdn.shopify.com/s/files/1/0434/2880/6806/files/81314822522.pdf
    • https://cdn.shopify.com/s/files/1/0430/1098/2041/files/68525604700.pdf
    • https://cdn.shopify.com/s/files/1/0447/9886/9653/files/schwing_stetter_batching_plant_cp18_spare_parts_list.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_off000077ce.bin
6ed60665b4c2864ed0be21bbdea5c22492033a97b0972adce7ff0c84702d8549		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77CE 5168 bytes
font_01_sfnt_off0000896f.bin
87714d04ee5aed4506ffc60f33017f72c780b99a2cdb72c629d182a4c8963121		 pdf-font-stream PDF embedded font (sfnt) at offset 0x896F 10624 bytes

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