Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ceb3caf90eb6d3…

MALICIOUS

PDF

43.8 KB Created: 2020-08-23 01:38:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c9a7114f42e621cb741998de9619381 SHA-1: 7c44f6f4bb7e814b727e9a51684c3600ebcbf1e8 SHA-256: 29ceb3caf90eb6d3a7a794905798748da048977f1b2fdc7740ff343616d8f08b
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 a redirector service. The primary malicious URL identified is https://ttraff.com/pify?keyword=air+conditioning+system+components+pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains this URL and other embedded links, suggesting a lure to a malicious site.

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=air+conditioning+system+components+pdf
    • http://muvev.holisticvoicecoach.com/uploads/1/3/1/4/131408899/7770614.pdf
    • http://sonawom.ediblelandscapes.net/uploads/1/3/1/3/131383544/5119093.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0931/files/wezupimajegelaputi.pdf
    • https://cdn.shopify.com/s/files/1/0430/6586/8437/files/verbal_ability_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/13087443605.pdf
    • https://cdn.shopify.com/s/files/1/0431/1737/9750/files/fotedinudamiwafejutaju.pdf
    • https://cdn.shopify.com/s/files/1/0427/8072/1311/files/38903648451.pdf
    • https://cdn.shopify.com/s/files/1/0431/3330/4986/files/37739147043.pdf
    • https://cdn.shopify.com/s/files/1/0437/9449/7698/files/the_scarlet_letter_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0435/1760/8090/files/cranial_nerves_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0429/5147/5351/files/86588194509.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/69892687871.pdf
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/phonetic_exercises_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0428/0044/7655/files/11952053180.pdf
    • https://cdn.shopify.com/s/files/1/0432/0614/8255/files/flapper_girl_lumineers_sheet_music.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_off00006e78.bin
4b48c55d1b0ae6caf8dd35e281cfb739b74306afd9df6b64eca09e540dc7f259		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E78 5324 bytes
font_01_sfnt_off00008087.bin
8fbeef7ee3b5519a6998fdbb16babe5244858c70239c19ddfb881af39ac1c0a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8087 9880 bytes

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