Malicious PDF — malware analysis report

Static analysis result for SHA-256 77ab3c37d29f77ea…

MALICIOUS

PDF

48.1 KB Created: 2020-08-04 23:30:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9244352f52a2b6089e9c003d795c4de2 SHA-1: 365e40f85d883ed16e589f4bf7207a13b0bd5f29 SHA-256: 77ab3c37d29f77eacae1abbadead4092c7f49ea6a67d92d1e2d87c74432a5e01
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector infrastructure, specifically 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Baraton university fee structure pdf', suggesting a lure to trick users into clicking the malicious link. The heuristic firings confirm the presence of malicious redirector links and a link farm within the PDF.

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.com/pify?keyword=baraton+university+fee+structure+pdf
    • http://files.delynclp.wales/uploads/1/3/1/4/131437376/7205249.pdf
    • http://files.sarahabel.com/uploads/1/3/2/8/132814272/vawivuzebopade-xuvuvevipa-mafelitaba.pdf
    • http://files.companionsofchrist.org/uploads/1/3/0/9/130969375/3234800.pdf
    • https://cdn.shopify.com/s/files/1/0432/5074/5512/files/17385244607.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/damegadunuje.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/widagizupubuvop.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/41617687197.pdf
    • https://cdn.shopify.com/s/files/1/0431/2065/6545/files/27735505484.pdf
    • https://cdn.shopify.com/s/files/1/0433/0212/5733/files/fobotavuwup.pdf
    • https://cdn.shopify.com/s/files/1/0435/3877/6223/files/euclidean_algorithm_gcd.pdf
    • https://cdn.shopify.com/s/files/1/0440/7522/1157/files/dojekadibarameta.pdf
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/tijokukirirutebe.pdf
    • https://cdn.shopify.com/s/files/1/0434/6334/4294/files/big_ideas_math_algebra_1_california_edition.pdf
    • https://cdn.shopify.com/s/files/1/0428/1381/6995/files/70273492740.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zotogobujadafozafinuv.pdf
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/96734682513.pdf
    • https://cdn.shopify.com/s/files/1/0430/7258/5888/files/kadojoguxunomopulu.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_off00006eb5.bin
341d8c20a0af6532d230eaa6a053ed3adaae270322930918d6f1f2498b95a111
pdf-font-stream PDF embedded font (sfnt) at offset 0x6EB5 5212 bytes
font_01_sfnt_off00008088.bin
0dee67a339c1b013188d5eedc5a54e867c5d2ffe941714b978c4780476d9a58d
pdf-font-stream PDF embedded font (sfnt) at offset 0x8088 10588 bytes
font_02_sfnt_off0000a4b0.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xA4B0 4324 bytes