Malicious PDF — malware analysis report

Static analysis result for SHA-256 c60934108dbdf37c…

MALICIOUS

PDF

45.8 KB Created: 2020-08-17 06:52:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41555da8be87c8db38d3616aac528dde SHA-1: 6413cb3868fa68efbc49a2efb6516ffe788ccbc9 SHA-256: c60934108dbdf37c0a45b114eacf2613f9cfc9278d8678cb372d0a634b8be7c0
136 Risk Score

Malware Insights

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

The PDF contains a lure for a fake verification form, indicated by the 'SE_INVOICE_LURE' heuristic and the document body text. It also contains a high number of embedded links, with one identified as a malicious redirector. The primary malicious URL is https://ttraff.ru/pify?keyword=cbse+online+verification+form+2018, which likely leads to further malicious content. The PDF structure and link farm suggest a phishing or redirection attack.

Heuristics 5

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=cbse+online+verification+form+2018
    • http://files.studiousscarlets.com/uploads/1/3/1/4/131438667/175880c8.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7422/files/pelabagemab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5480/0797/files/40004539148.pdf
    • https://cdn.shopify.com/s/files/1/0452/8416/3746/files/algorithm_in_programming.pdf
    • https://cdn.shopify.com/s/files/1/0431/0266/6906/files/libameviwudatadenamoxifeg.pdf
    • https://cdn.shopify.com/s/files/1/0427/9681/0396/files/teretowirelimovire.pdf
    • https://cdn.shopify.com/s/files/1/0436/7355/1001/files/tamirekozozowawiduvuwar.pdf
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/nubefaro.pdf
    • https://cdn.shopify.com/s/files/1/0434/1458/5509/files/data_governance_model_template.pdf
    • https://cdn.shopify.com/s/files/1/0433/5442/3445/files/63539714274.pdf
    • https://cdn.shopify.com/s/files/1/0427/8986/3580/files/xezixeze.pdf
    • https://cdn.shopify.com/s/files/1/0435/4818/0634/files/credit_card_risk_management.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/minecraft_windows_10_code_generator.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_off00007437.bin
85369ff5ef62c7c368c6243d9fff44cacbb07e97cbdf6dd3cbabc03112b5db99
pdf-font-stream PDF embedded font (sfnt) at offset 0x7437 5652 bytes
font_01_sfnt_off00008758.bin
4242e196be09c5f689aa66fc8744745ff0949bc0e6ca2486a3bda77f93c9777b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8758 10376 bytes