Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf8469d835e79d4c…

MALICIOUS

PDF

41.7 KB Created: 2020-08-19 05:12:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4380552a7996f425aeb82db5c2053790 SHA-1: e526d029783cd4bf880d59171b16cb839d16f634 SHA-256: bf8469d835e79d4c6e3bb54b4b038beafe2b141a0c39a8795364e5eba88aaf95
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service (ttraff.com). The document body, though heavily obfuscated, contains the string 'power cable selection guide pdf' which is also present in the redirector URL. This suggests the document is designed to trick users into clicking malicious links under the guise of a technical document, likely leading to further malware download or phishing.

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=power+cable+selection+guide+pdf
    • http://files.pontyclunchiropractor.co.uk/uploads/1/3/0/7/130738752/b51169b1b530.pdf
    • http://files.malaysia-places.com/uploads/1/3/1/3/131398392/5135492.pdf
    • https://cdn.shopify.com/s/files/1/0447/7750/4925/files/python_queue_example.pdf
    • https://cdn.shopify.com/s/files/1/0437/4996/5985/files/16938535414.pdf
    • https://cdn.shopify.com/s/files/1/0435/2232/6680/files/80918121663.pdf
    • https://cdn.shopify.com/s/files/1/0433/4885/2894/files/90549959191.pdf
    • https://cdn.shopify.com/s/files/1/0429/8568/5153/files/jixovigo.pdf
    • https://cdn.shopify.com/s/files/1/0429/3053/6614/files/each_with_index_ruby.pdf
    • https://cdn.shopify.com/s/files/1/0429/5213/0716/files/mazilujazunijepesa.pdf
    • https://cdn.shopify.com/s/files/1/0431/9471/2228/files/37627605698.pdf
    • https://cdn.shopify.com/s/files/1/0439/4044/6366/files/algebra_and_trigonometry_enhanced_with_graphing_utilities_7th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0429/8457/1031/files/best_place_to_farm_thorium.pdf
    • https://cdn.shopify.com/s/files/1/0431/1053/1233/files/maduxipuvakonulidefumimoj.pdf
    • https://cdn.shopify.com/s/files/1/0444/4412/3302/files/nexus_agile_framework.pdf
    • https://cdn.shopify.com/s/files/1/0432/6958/7104/files/problems_on_ages_bankers_adda.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_off000063c3.bin
a3a86846161b81f00532b389e5b26b7b7a66040f63efabcf3b44bf4a00b6793a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63C3 5556 bytes
font_01_sfnt_off000076bd.bin
22d484373f877279909327d4358b25018c0e3ca263ef784849118ceefac14b9b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76BD 10360 bytes

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