Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae5245d14d58ced6…

MALICIOUS

PDF

51.5 KB Created: 2020-08-21 07:15:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e23c99514ae146d1b77e3b13d70b7630 SHA-1: 563cd0f6418e64528ec17dd6edc0e24964db63dc SHA-256: ae5245d14d58ced693b29eb43afb1bba9b1471d6d65d5e750119c90b48b37117
130 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.cc/pify?keyword=marksheet+number+mumbai+university', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Marksheet number mumbai university' and also lists numerous PDF links, many hosted on Shopify. This suggests a lure to trick users into clicking malicious links under the guise of an academic or financial document, likely leading to further malware delivery.

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=marksheet+number+mumbai+university
    • http://files.uptildawnpaperworks.com/uploads/1/3/0/7/130775997/4076286.pdf
    • http://sited.tnquarterhorsesales.com.au/uploads/1/3/1/1/131164112/wepabavebot.pdf
    • http://files.loveforchinese.com/uploads/1/3/2/6/132683400/d13d828f7b69.pdf
    • http://mabawusiz.sydmocreativeco.com/uploads/1/3/1/6/131606457/nonuminusasoxo_wepoxasagavu_wimolu.pdf
    • https://cdn.shopify.com/s/files/1/0455/5816/9765/files/48174427566.pdf
    • https://cdn.shopify.com/s/files/1/0433/7310/1214/files/pakamavosoworip.pdf
    • https://cdn.shopify.com/s/files/1/0432/9370/4350/files/66626010545.pdf
    • https://cdn.shopify.com/s/files/1/0461/5520/2723/files/28929821396.pdf
    • https://cdn.shopify.com/s/files/1/0434/5135/1200/files/94732721285.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/tejunudazoliburudok.pdf
    • https://cdn.shopify.com/s/files/1/0437/1070/9915/files/888911556.pdf
    • https://cdn.shopify.com/s/files/1/0430/4620/7637/files/giwezuzowate.pdf
    • https://cdn.shopify.com/s/files/1/0434/2225/3205/files/evaluate_homework_and_practice_answers_geometry.pdf
    • https://cdn.shopify.com/s/files/1/0430/3106/8825/files/80269460044.pdf
    • https://cdn.shopify.com/s/files/1/0430/7002/9975/files/5442387345.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_off0000706b.bin
378538b90cfe64df1e1b2d821d93ff32d73cf1829ae3f08c95ae04927661db4d
pdf-font-stream PDF embedded font (sfnt) at offset 0x706B 5036 bytes
font_01_sfnt_off00008164.bin
f606e8c88c634296bf2589958f48148dfee8c59bbd6e62be3955ec2f021eebf2
pdf-font-stream PDF embedded font (sfnt) at offset 0x8164 16152 bytes
font_02_sfnt_off0000b2ca.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB2CA 4324 bytes