Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b15dd67c5b99d4d…

MALICIOUS

PDF

34.5 KB Created: 2020-08-22 13:15:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 472037426f58246d8af5102d5c80b4cc SHA-1: 10a46dff092d2e46f2e50776638fb94d9a78a0bd SHA-256: 4b15dd67c5b99d4d4bb63bad19944fdca462d519c21824450c0a579a26fd5ff6
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, identified as a link farm. One of these links, https://ttraff.cc/pify?keyword=weather+report+today+in+bihar+kaimur, points to a known malicious redirector. The document body appears to be obfuscated or corrupted, but the presence of numerous links suggests an attempt to direct the user to malicious content, likely for phishing or malware distribution.

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=weather+report+today+in+bihar+kaimur
    • http://files.kofc5962.org/uploads/1/3/1/4/131438018/5666027.pdf
    • https://cdn.shopify.com/s/files/1/0434/9159/0308/files/lewopekubixefevopavivazi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9665/4489/files/11535783114.pdf
    • https://cdn.shopify.com/s/files/1/0432/8236/6629/files/gulugi.pdf
    • https://cdn.shopify.com/s/files/1/0436/9291/6886/files/pebovisutadukizil.pdf
    • https://cdn.shopify.com/s/files/1/0435/8130/9085/files/79029397555.pdf
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/imaginarium_6v_express_train.pdf
    • https://cdn.shopify.com/s/files/1/0439/2324/3176/files/oxidative_phosphorylation_download.pdf
    • https://cdn.shopify.com/s/files/1/0440/0673/6037/files/61435445750.pdf
    • https://cdn.shopify.com/s/files/1/0436/0175/6323/files/bible_study_book_of_ephesians.pdf
    • https://cdn.shopify.com/s/files/1/0431/3799/0805/files/aws_ec2_securitygroupingress.pdf
    • https://cdn.shopify.com/s/files/1/0432/5693/8664/files/bapupaverivedomiwozo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7185/6026/files/report_writing_example_train_accident.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_off00004ac8.bin
2c74ecf7aacdfd24d411e2429f4f8521c588a210ecd7b48607452ebbea126450		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4AC8 5308 bytes
font_01_sfnt_off00005cb6.bin
fe184ebee1e24df53476372244401b2d8ad5f59b3c34b23a91c88e95173ae28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CB6 9536 bytes

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