Malicious PDF — malware analysis report

Static analysis result for SHA-256 f64fb6497f4c179e…

MALICIOUS

PDF

50.0 KB Created: 2020-07-16 17:03:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 795d43ca1deebb0619a83aae0dc95a4f SHA-1: f17e51bae9b29638ecc5a22fb2c9776761d176d7 SHA-256: f64fb6497f4c179e7bb3b9e24ab161f6005502c3ca7ae0e11ad6682c5615da6e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF file contains a link farm, with one primary link redirecting to malicious infrastructure. The document body is heavily obfuscated, but the presence of the 'Livestrong 13.0 elliptical manual' text suggests a lure to encourage users to click the embedded link. The link `https://ttraff.ru/wb?keyword=livestrong%2013.0%20elliptical%20manual` is identified as a malicious redirector.

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/wb?keyword=livestrong%2013.0%20elliptical%20manual
    • http://files.lions-football.com/uploads/1/3/1/6/131636678/kavapenejibijofe.pdf
    • http://files.kgsa.org.au/uploads/1/3/1/1/131164033/fulumidomid.pdf
    • http://files.minkacademy.com/uploads/1/3/0/7/130776743/1721785.pdf
    • https://pokidujurej.files.wordpress.com/2020/07/28941185514.pdf
    • https://wiginikinu.files.wordpress.com/2020/07/bobip.pdf
    • https://rakavimiwo351581816.files.wordpress.com/2020/07/25370301556.pdf
    • https://pipupuza.files.wordpress.com/2020/06/29260815659.pdf
    • https://zeninel.files.wordpress.com/2020/07/12086577429.pdf
    • https://fumusamo.files.wordpress.com/2020/07/64817275282.pdf
    • https://voferesubexi.files.wordpress.com/2020/07/96300812097.pdf
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/walit.pdf
    • https://cdn.shopify.com/s/files/1/0434/5249/8070/files/letaripisividorikepogabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/93825775317.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/matam.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/86943239026.pdf
    • https://cdn.shopify.com/s/files/1/0430/8120/3861/files/mumobawunuz.pdf
    • https://cdn.shopify.com/s/files/1/0436/9124/5733/files/95767654221.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/53059057271.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/zekagovixejag.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_off00007881.bin
164fe8b80c1f6fa6f89d38d295d1ce5b2d501c6953ddc394fb265484fc74b3cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7881 5528 bytes
font_01_sfnt_off00008b45.bin
b56712d2ffea7320763084dcdf3fcd7fe4ffeaea38d70f834a5af2b4718d4225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B45 15380 bytes

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