Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c05236c6f3a9101…

MALICIOUS

PDF

84.1 KB Created: 2020-08-20 14:13:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 467923e496f52d46e997b76ea7ef18c6 SHA-1: ccb4d40c450ec2a807a8843c33421d35ab0552f2 SHA-256: 9c05236c6f3a9101612c2e51af5265df0b627d785d0e344b6452c842e2af2e46
120 Risk Score

Malware Insights

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

The PDF file contains a mass external link farm, with many links pointing to benign content on Shopify. However, one critical heuristic identified a link to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains the string 'E i a report' and the malicious URL 'https://ttraff.com/pify?keyword=e+i+a+report', suggesting a lure to a phishing or malware distribution site. The presence of multiple embedded URLs, including those hosted on Shopify and other unknown domains, further supports the attack pattern of a link-based lure.

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=e+i+a+report
    • http://jesizet.fpzuc.co/uploads/1/3/0/8/130874218/vinuzimadaja_nasasobej_lonokekin_lomekiwit.pdf
    • http://xusam.wetnosespa.com/uploads/1/3/0/7/130738629/1839165.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/84368738446.pdf
    • https://cdn.shopify.com/s/files/1/0434/0655/7345/files/conveyor_belt_design_manual_bridgestone.pdf
    • https://cdn.shopify.com/s/files/1/0435/5656/9249/files/depafumo.pdf
    • https://cdn.shopify.com/s/files/1/0440/4586/1029/files/business_plan.pdf
    • https://cdn.shopify.com/s/files/1/0447/3287/4901/files/vesubuxuxovodonaxadujotaj.pdf
    • https://cdn.shopify.com/s/files/1/0434/2376/0536/files/bauhinia_purpurea.pdf
    • https://cdn.shopify.com/s/files/1/0428/9432/7961/files/virology_definition.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/21228944423.pdf
    • https://cdn.shopify.com/s/files/1/0435/7105/2703/files/36741991360.pdf
    • https://cdn.shopify.com/s/files/1/0432/9462/1862/files/24712483521.pdf
    • https://cdn.shopify.com/s/files/1/0447/8235/4589/files/24727835978.pdf
    • https://cdn.shopify.com/s/files/1/0427/9743/2999/files/defilo.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_off00010eac.bin
5bb5aaa5e34ecce10e449d498e0559e9fb7a97dfd8061a6f4c1576ac46a90554
pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAC 4560 bytes
font_01_sfnt_off00011e3c.bin
8cfb557223322f4020848af24c8fbea1727996ba84023dba4b8dcde592680b32
pdf-font-stream PDF embedded font (sfnt) at offset 0x11E3C 11072 bytes