Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9c526ab6daff639…

MALICIOUS

PDF

59.8 KB Created: 2020-08-19 02:33:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fea13a27edb9c152f64add8ef1dce11e SHA-1: 804c3de089303dd98c0853bd59b1257121e67ce8 SHA-256: c9c526ab6daff6393ce4b9edb5bbd8a982361ac1bd7175bf9bf77a6e4a1ed882
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is also present in the document body, disguised as a download for 'business in box software free'. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary malicious link is likely intended to redirect the user to a compromised or malicious site.

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=business+in+box+software+free
    • http://files.yardsoffunwny.com/uploads/1/3/0/7/130739864/3240538.pdf
    • http://pizedixi.sondrineleebontemps.com/uploads/1/3/0/8/130813848/3946532.pdf
    • http://files.comfychemocarebagproject.org/uploads/1/3/0/7/130739718/lajupoxo-liparenarazedo.pdf
    • http://files.ladogtrainers.com/uploads/1/3/1/6/131607232/ea4c91320cea1.pdf
    • http://files.ladogtrainers.co
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/81707013669.pdf
    • https://cdn.shopify.com/s/files/1/0429/5232/7324/files/antibody_screening_and_identification.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5552762143.pdf
    • https://cdn.shopify.com/s/files/1/0435/6961/0907/files/pefirimikitiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/22106835947.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1266/files/texinumubi.pdf
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/gagomot.pdf
    • https://cdn.shopify.com/s/files/1/0434/6957/0198/files/large_dust_sheets_b_q.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7870/files/1534622522.pdf
    • https://cdn.shopify.com/s/files/1/0431/1895/2612/files/kiropevogezomedil.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_off0000ab20.bin
d75fd27438a5b6beaed078445549e2ac2d66493991f81b4847a3ba525a104168		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAB20 5076 bytes
font_01_sfnt_off0000bc89.bin
a2ed35be5854abcc79f877bd49c3322024345bb2f2cf019fab9cb27eb16faa45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC89 10956 bytes

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