Malicious PDF — malware analysis report

Static analysis result for SHA-256 b57f3056e59f7e5a…

MALICIOUS

PDF

35.4 KB Created: 2020-08-21 17:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77ab48ab66240154ed12babfb17570c0 SHA-1: 7241d292bebdd909387fe1946b9861b625650492 SHA-256: b57f3056e59f7e5ad841bf7c5626c3002fb0bebeb1091e5144d67e9e2717f2d3
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, a common tactic for SEO poisoning and redirecting users to malicious sites. One of the primary URLs, 'https://ttraff.com/pify?keyword=american+flag+image+hd', is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting it is the intended 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=american+flag+image+hd
    • http://tipuzoro.myluriyubodyscrubs.com/uploads/1/3/1/4/131438541/wixowezu.pdf
    • http://xukobip.sidekickoffroad.com/uploads/1/3/1/3/131383613/nakotipefaxotovulod.pdf
    • https://cdn.shopify.com/s/files/1/0431/3645/0717/files/mri_brain_atlas_and_text.pdf
    • https://cdn.shopify.com/s/files/1/0432/2754/5763/files/83997986544.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdf
    • https://cdn.shopify.com/s/files/1/0433/5288/3352/files/71531105421.pdf
    • https://cdn.shopify.com/s/files/1/0434/1966/4542/files/interview_aptitude_questions_and_answers_with_explanation.pdf
    • https://cdn.shopify.com/s/files/1/0429/2775/1321/files/fuwupowaxixomef.pdf
    • https://cdn.shopify.com/s/files/1/0435/7367/4142/files/ponepesibazigosesifeko.pdf
    • https://cdn.shopify.com/s/files/1/0447/8697/4869/files/pirewo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1415/0565/files/15460171877.pdf
    • https://cdn.shopify.com/s/files/1/0435/8511/0175/files/lenofamajumoxerimuxiwov.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_off00004f3e.bin
c018afc6dbf7b33e584470a9c68671d8c4d37a7f79fe39f19a3734499b34cd2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F3E 5244 bytes
font_01_sfnt_off000060d5.bin
d486846c34ac714389c30fcfb6d91bef321871c48a8c15e4ee08e27d8ce9471e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D5 9540 bytes

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