Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a7a950b4fb0db26…

MALICIOUS

PDF

48.8 KB Created: 2020-08-08 10:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d54d5824a79adbe57647cc5b54a04f4 SHA-1: 534282d6339422909018691e1d5f435fba92dbdc SHA-256: 1a7a950b4fb0db260c738c5579fd976123760cf5a3cbd9759df6774ce69fcfc1
120 Risk Score

Malware Insights

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

The PDF contains numerous links, with one heuristic specifically identifying a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=prepositions+of+place+esl+pdf'. Another heuristic indicates a large number of external PDF links, suggesting a link farm for SEO manipulation or to obscure malicious destinations. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves luring users to click on these links.

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=prepositions+of+place+esl+pdf
    • http://files.masoncru.org/uploads/1/3/0/8/130874647/jopojenovuki.pdf
    • http://files.westwellpark.co.uk/uploads/1/3/2/3/132303134/kivever_vufubofewabaseg_fosibat_julazitaxi.pdf
    • http://files.dawsonfoundation.org/uploads/1/3/1/3/131398194/xigukiwofez-vifarekusagin-dekibebuzo.pdf
    • http://torif.professionalbowhunters.org/uploads/1/3/0/7/130775997/magijezofo.pdf
    • http://files.beccarothfeld.com/uploads/1/3/0/8/130874326/20e7cfe6.pdf
    • https://cdn.shopify.com/s/files/1/0434/3152/6561/files/meduretetulagemoko.pdf
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/eight_hundred_dollars.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/gogoxana.pdf
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/files/linuxopodob.pdf
    • https://cdn.shopify.com/s/files/1/0430/0508/3811/files/75297720101.pdf
    • https://cdn.shopify.com/s/files/1/0429/5419/5097/files/saludoju.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/86537651913.pdf
    • https://cdn.shopify.com/s/files/1/0434/8621/6344/files/15632210789.pdf
    • https://cdn.shopify.com/s/files/1/0434/7727/0692/files/posoriwifokewibig.pdf
    • https://cdn.shopify.com/s/files/1/0435/4218/4095/files/tujudobobap.pdf
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/gepesizedotorugobujaju.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/
    • https://cdn.shopify.com/s/files/1/0428/6794/9724/f

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007b4b.bin
177402241c343062a64adedd8404b789c89464b242ff820a26c988fafffe936c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B4B 5152 bytes
font_01_sfnt_off00008cdd.bin
0a4b4082a24fe34fc18a7b986dd56e832086582a926faaad83a87860389df4f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CDD 13384 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.