Malicious PDF — malware analysis report

Static analysis result for SHA-256 86c12f34e2987ca6…

MALICIOUS

PDF

47.1 KB Created: 2020-07-16 17:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45db31b207eeb71a6d8c2328e85acb9a SHA-1: 318b10bc84d60994f1e23a9a41cc3e2fa544e769 SHA-256: 86c12f34e2987ca60429445c05a89e4c0c0dbd29eff19312308b68dc0255213a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell 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.ru/wb?keyword=tecnicas%20de%20proloterapia%20pdf', points to known malicious redirector infrastructure. The document body is heavily obfuscated and appears to be generated content, further supporting the malicious intent of redirecting users to potentially harmful sites.

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=tecnicas%20de%20proloterapia%20pdf
    • http://files.cfnaturalhealth.com/uploads/1/3/1/1/131163643/2829028.pdf
    • http://files.bestbodyfitness.net/uploads/1/3/1/8/131856567/libal.pdf
    • http://files.innerheartpathways.com/uploads/1/3/2/6/132681002/46e9335.pdf
    • http://files.travelwithsaranewbury.com/uploads/1/3/1/3/131380138/2502475.pdf
    • http://files.saturnrinanewburnmedportfolio.com/uploads/1/3/1/4/131453151/f2c1f5efb.pdf
    • http://files.aleksandragwardiak.com/uploads/1/3/1/4/131438151/6921859.pdf
    • http://files.gardenspotrentals.net/uploads/1/3/2/6/132681938/finefenusavat.pdf
    • https://dusebatewu.files.wordpress.com/2020/07/92343624455.pdf
    • https://fizubakaxuz.files.wordpress.com/2020/07/44333735407.pdf
    • https://dowixame.files.wordpress.com/2020/06/gaxitibodew.pdf
    • https://jebozakid.files.wordpress.com/2020/07/21283923140.pdf
    • https://tozoxoxejon.files.wordpress.com/2020/06/40887231824.pdf
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/68867655931.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/52856007126.pdf
    • https://cdn.shopify.com/s/files/1/0432/1725/6603/files/18851529953.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/77439678162.pdf
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/57090569702.pdf
    • https://cdn.shopify.com/s/files/1/0433/7709/8910/files/kuzudotarigip.pdf
    • https://cdn.shopify.com/s/files/1/0431/2062/3765/files/botiwami.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/medarovadujagowurevasote.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/25424470269.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_off00007909.bin
0bcaf62d922a17ae4304519871d7e1a905fcea82461f9c2e8f55493648ff94c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x7909 4888 bytes
font_01_sfnt_off000089a2.bin
6b457d903d73b7014b692bb56d06341032046981cd619835bb4ef7b7fd0064a8
pdf-font-stream PDF embedded font (sfnt) at offset 0x89A2 11052 bytes