Malicious PDF — malware analysis report

Static analysis result for SHA-256 497af62c66ca8281…

MALICIOUS

PDF

39.8 KB Created: 2020-08-18 22:03:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fe86b9f77a953796aa5e38e48c46a341 SHA-1: 8f63d7803485d3dec80dea1fa8c80295f6b9a25f SHA-256: 497af62c66ca8281fd11dca79fed0b6846d53bd702a0402d6c68701af54ce7b9
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=alt+j+taro+free', points to a known malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it is a primary lure. The presence of numerous links, many hosted on seemingly benign platforms like Shopify but pointing to potentially malicious content, indicates a strategy to distribute malicious payloads or conduct phishing attacks.

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=alt+j+taro+free
    • http://reboken.100x35online.com/uploads/1/3/0/8/130874250/dirasatekalu.pdf
    • http://files.evangelismfireministries.com/uploads/1/3/1/8/131858791/9106861.pdf
    • https://cdn.shopify.com/s/files/1/0430/9434/3841/files/sivodolajurix.pdf
    • https://cdn.shopify.com/s/files/1/0452/4163/0882/files/70168328787.pdf
    • https://cdn.shopify.com/s/files/1/0438/6629/2389/files/xonaxewevizu.pdf
    • https://cdn.shopify.com/s/files/1/0436/4202/8182/files/proper_business_letter_format_with_cc.pdf
    • https://cdn.shopify.com/s/files/1/0430/7789/4293/files/16913998739.pdf
    • https://cdn.shopify.com/s/files/1/0430/8484/1124/files/jurowotoxugagoboruxagedil.pdf
    • https://cdn.shopify.com/s/files/1/0435/5496/3617/files/86725435648.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3553/files/income_tax_calculation_statement_form_2020_19.pdf
    • https://cdn.shopify.com/s/files/1/0437/7031/4903/files/dragon_s_dogma_snakeskin_purse.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_off00005ff3.bin
154feb63189c3bd52c3ffa84a5859e7fb24db1a24194bbb630d312db90958d01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FF3 4648 bytes
font_01_sfnt_off00006fcd.bin
7f64663e8b355c19f1d6a23357a4183a1f46ed48990aa501ce102b39ea2d737c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCD 10404 bytes

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