Malicious PDF — malware analysis report

Static analysis result for SHA-256 337c6a43c8daac67…

MALICIOUS

PDF

37.2 KB Created: 2020-08-29 18:05:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 60689e1a8263abd4a0f2c442b073ef19 SHA-1: a2f157babb916029a46482fdbb375f73bf379957 SHA-256: 337c6a43c8daac67924b21dd7fc38b0fa9dff93080f731d4d7110a61511c3274
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to PDF files hosted on Shopify. One of these links, https://ttraff.cc/wix?keyword=ilx+w650+android+auto, is identified as a known malicious redirector. This suggests a link farm or SEO poisoning attack designed to lure users to malicious content. No scripts were extracted, and the document body was heavily obfuscated.

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.cc/wix?keyword=ilx+w650+android+auto
    • https://cdn.shopify.com/s/files/1/0430/7632/1434/files/89726468321.pdf
    • https://cdn.shopify.com/s/files/1/0432/0994/9348/files/biology_notes_gradeup.pdf
    • https://cdn.shopify.com/s/files/1/0427/8275/2935/files/toxusuzefejaxobelumugune.pdf
    • https://cdn.shopify.com/s/files/1/0432/3747/4466/files/basic_accounting_concepts_for_beginners.pdf
    • https://cdn.shopify.com/s/files/1/0428/9105/1161/files/blue_sky_surf_shop.pdf
    • https://cdn.shopify.com/s/files/1/0427/8845/4559/files/my_name_ringtone_with_music_bestwap.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/44240048578.pdf
    • https://cdn.shopify.com/s/files/1/0428/9855/5043/files/max_and_ruby_s_parents.pdf
    • https://cdn.shopify.com/s/files/1/0435/2701/2507/files/print_tensorflow_version.pdf
    • https://cdn.shopify.com/s/files/1/0432/0896/6306/files/lemisominixepokabepeluri.pdf
    • https://cdn.shopify.com/s/files/1/0436/7505/8329/files/marinizasaditaniletu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0605/7883/files/44812616457.pdf
    • https://cdn.shopify.com/s/files/1/0433/1778/8830/files/54458903986.pdf
    • https://cdn.shopify.com/s/files/1/0433/2797/9678/files/nukadenomig.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_off00004638.bin
d8f1956a53744937d2bd1ab37748b22be71c93e1448ea698fc0f818cee3ac8fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4638 4920 bytes
font_01_sfnt_off00005703.bin
c96937ba047502e429741f8086d0eae52ee962c0304fed8029fa864c0db77ffd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5703 10268 bytes
font_02_sfnt_off00007a39.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A39 4324 bytes

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