Malicious PDF — malware analysis report

Static analysis result for SHA-256 792e04a4dec37f34…

MALICIOUS

PDF

43.8 KB Created: 2020-08-21 07:29:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82eca0c529702a140078e6e7d7545c68 SHA-1: ae88787e1e2be1e78fdd720d9707abdd91bf3d56 SHA-256: 792e04a4dec37f34b706ab3df8a2f90b4cc420b4878f957d171fa88f93d45b3f
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, a technique often used in SEO link farms to manipulate search engine rankings or to distribute malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=byron+bay+surf+guide', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF links hosted on Shopify, suggesting a coordinated effort to lure users to potentially harmful sites.

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.ru/pify?keyword=byron+bay+surf+guide
    • http://gonati.christineszinner.com/uploads/1/3/2/6/132681352/5016302.pdf
    • http://files.kyammo.com/uploads/1/3/1/4/131406403/fulizimunepapim.pdf
    • http://sovuvejik.aliturnerpiper.com/uploads/1/3/0/7/130739835/ffc89564aef1f09.pdf
    • http://files.amandairl.com/uploads/1/3/0/7/130740596/kizitavoxafabavo.pdf
    • https://cdn.shopify.com/s/files/1/0429/6749/8911/files/vabukenexo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9969/files/91262004672.pdf
    • https://cdn.shopify.com/s/files/1/0430/9306/5877/files/atlas_of_regional_anesthesia.pdf
    • https://cdn.shopify.com/s/files/1/0448/2557/5581/files/english_vocabulary_words_with_meaning_in_gujarati.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/alphabet_spelling_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0431/1800/2340/files/97084154128.pdf
    • https://cdn.shopify.com/s/files/1/0452/0319/4007/files/judor.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/jisexuromepotavixujelax.pdf
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/ninodinixubosodu.pdf
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/bilirrubina_directa_o_conjugada.pdf
    • https://cdn.shopify.com/s/files/1/0432/0270/7616/files/peak_getfueled_answers.pdf
    • https://cdn.shopify.com/s/files/1/0439/7400/0798/files/54085487804.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_off00006ce7.bin
f110d23443386018e1e0e2c1e1de77ad9c195ea73b7056859d9aa8d0697de408		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CE7 5336 bytes
font_01_sfnt_off00007f1a.bin
cbf06c6370d3b93c129cb782da306bc950dcbdd081e64362eb70f25e127fa0d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F1A 10440 bytes

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