Malicious PDF — malware analysis report

Static analysis result for SHA-256 28b2c6f780f5ef99…

MALICIOUS

PDF

36.0 KB Created: 2020-08-19 20:46:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 602c5e673e6e0d9b8453a3d465bfbd25 SHA-1: 63dc8c3c45ece9e5933b23132f676ee945e90405 SHA-256: 28b2c6f780f5ef990614833319a887ccb9f2e3504b40be77b45ec5518fd7a35a
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM suggests a large number of external links, many hosted on Shopify, likely to obscure the malicious redirector. The document body contains a URL that redirects to a malicious site, attempting to trick the user into downloading a file under the guise of a business law book.

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=malaysia+business+law+book+pdf
    • http://mopir.daniellemckee.org/uploads/1/3/0/7/130740257/4483990.pdf
    • http://files.helpsavetroubledteens.com/uploads/1/3/1/4/131412235/8fd600177ec.pdf
    • http://jotite.heart-tokushima.com/uploads/1/3/1/4/131407498/7147768.pdf
    • http://files.cassandramlambros.net/uploads/1/3/0/9/130969082/gevazogiketuwu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8607/8369/files/72441790508.pdf
    • https://cdn.shopify.com/s/files/1/0431/0433/8073/files/health_psychology_understanding_the_mind_body_connection.pdf
    • https://cdn.shopify.com/s/files/1/0433/9495/7475/files/clear_vairable_in_python.pdf
    • https://cdn.shopify.com/s/files/1/0433/2004/9822/files/80157501280.pdf
    • https://cdn.shopify.com/s/files/1/0435/5653/6471/files/11344871887.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6264/files/moguwiboruj.pdf
    • https://cdn.shopify.com/s/files/1/0430/6694/9799/files/sututasomulojixanit.pdf
    • https://cdn.shopify.com/s/files/1/0432/0549/2904/files/fivikadumulav.pdf
    • https://cdn.shopify.com/s/files/1/0429/7113/6154/files/advanced_english_grammar_rules.pdf
    • https://cdn.shopify.com/s/files/1/0432/6785/0390/files/zujowonirof.pdf
    • https://cdn.shopify.com/s/files/1/0438/4977/7312/files/tozezilur.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3464/files/xogarujifenorek.pdf
    • https://cdn.shopify.com/s/files/1/0434/1760/0165/files/levinoda.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_off00004e6a.bin
46628595ea573d7f04e84f6643aea56ebb35a697fa88c4be9b5cf12f566d68ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E6A 5344 bytes
font_01_sfnt_off000060c2.bin
8c13b13079173c118c3c3869ef06e5d88bbc213f621ae6d199936c2b79c93a8d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60C2 10088 bytes

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