Malicious PDF — malware analysis report

Static analysis result for SHA-256 92117340b638b6a6…

MALICIOUS

PDF

53.0 KB Created: 2020-09-03 05:44:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00af70671d4ae3674d111066fc34ab54 SHA-1: 554780d8629f1cbf38e3a0a44e91a1f87dc6ca62 SHA-256: 92117340b638b6a6b503505af17caaa4f832f555296789d6b68104f72bfb7468
128 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=task+timeline+template+excel'. This URL is presented within the document body, disguised as a 'Task timeline template excel'. The file also exhibits characteristics of a PDF link farm, with numerous external links, one of which is to 'https://cdn.shopify.com/s/files/1/0434/1088/2716/files/repusatosiwaro.pdf'. The presence of these links and the invoice lure heuristic suggest a phishing or social engineering attack aimed at redirecting users to malicious content.

Heuristics 4

  • 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
  • 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.cc/pify?keyword=task+timeline+template+excel
    • https://cdn.shopify.com/s/files/1/0434/1088/2716/files/repusatosiwaro.pdf
    • https://cdn.shopify.com/s/files/1/0434/2677/5196/files/vaneb.pdf
    • https://cdn.shopify.com/s/files/1/0448/0257/2437/files/consumer_reports_zero_turn_mowers.pdf
    • https://cdn.shopify.com/s/files/1/0432/5654/5433/files/niwaxibo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2114/8061/files/javologud.pdf
    • https://cdn.shopify.com/s/files/1/0434/4319/1960/files/87841803736.pdf
    • https://cdn.shopify.com/s/files/1/0435/9772/5864/files/28448171980.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/diponobosigibenisitomiza.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1510/files/tizowinubipitedorig.pdf
    • https://cdn.shopify.com/s/files/1/0434/2654/5820/files/xexonebu.pdf
    • https://static.usrfiles.com/ugd/72b0e7_ceedc7d8370a428b902b3877802dcf16.pdf
    • https://static.usrfiles.com/ugd/6a7407_292452c8a57442239f3783d192340bfa.pdf
    • https://static.usrfiles.com/ugd/b8c837_025290823c7942dbb525e6fbd0937e2c.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007e1b.bin
ee705c97e2937943dad86e3b100b86ef078c8b07b17f59dc319b44fb996d1627
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E1B 5064 bytes
font_01_sfnt_off00008f4d.bin
7705a811e6148e1b218845640dd945f95401b4085252fa3e7800b93ea4f28776
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4D 10060 bytes
font_02_sfnt_off0000b1fc.bin
b7d3fe0f0eed6e60c79e5026c6c3c7babf05c9d359090ed5b12ebb11be5d450a
pdf-font-stream PDF embedded font (sfnt) at offset 0xB1FC 16120 bytes