Malicious PDF — malware analysis report

Static analysis result for SHA-256 39bca38fc35ffde4…

MALICIOUS

PDF

35.6 KB Created: 2020-08-22 12:41:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7277d364595b8c518b1a85dba7e0b570 SHA-1: 2284c53024643ba5b028a918a0917c86c566afca SHA-256: 39bca38fc35ffde4aed7558f630d49cf61dbca050a0df642195a339af4300c59
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=fivb+score+sheet+3+sets'. Additionally, it exhibits a PDF link farm behavior, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains references to the malicious URL and benign-looking PDF filenames, suggesting a lure to redirect users to malicious infrastructure. The primary intent appears to be directing users to the ttraff.ru domain for further malicious activity.

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=fivb+score+sheet+3+sets
    • http://files.newwestminsterchristadelphian.org/uploads/1/3/2/7/132740836/9b3acbd5743.pdf
    • http://files.mccrayart.com/uploads/1/3/2/7/132740362/9602397.pdf
    • https://cdn.shopify.com/s/files/1/0436/5107/2158/files/www_carplounge_de_anleitungen_gps.pdf
    • https://cdn.shopify.com/s/files/1/0437/3633/4501/files/15697837129.pdf
    • https://cdn.shopify.com/s/files/1/0440/1161/8462/files/that_was_easy.pdf
    • https://cdn.shopify.com/s/files/1/0454/5445/9030/files/siwofetepixamal.pdf
    • https://cdn.shopify.com/s/files/1/0431/4244/7265/files/formosan_aboriginal_culture_village_location.pdf
    • https://cdn.shopify.com/s/files/1/0464/6089/5384/files/mokekeb.pdf
    • https://cdn.shopify.com/s/files/1/0431/3274/7927/files/network_engineer_interview_questions_and_answers_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/5420/3031/files/character_education_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/additional_mathematics_pure_and_applied_talbert_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/2147/4714/files/11873451018.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_off00004f93.bin
d0b87b1b1e0ec2bef9588034b276e9d110a1cbb5db812476cb6b92d4c4aab7de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F93 4964 bytes
font_01_sfnt_off00006071.bin
51cbec6277ffaab6a730aafed2a0da8246c66a0ac0909a8ab6a16d2c79b5bc63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6071 9900 bytes

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