Malicious PDF — malware analysis report

Static analysis result for SHA-256 40ce2160c73cb33a…

MALICIOUS

PDF

37.6 KB Created: 2020-08-26 14:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61b56245236fe6ef93bebe4404a121eb SHA-1: ebd3b26025b3ec02b0c64e01c59f230dd888d226 SHA-256: 40ce2160c73cb33a6e74302f30a8a22f02b91c0d375380d1351c6011ba91151b
120 Risk Score

Malware Insights

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

The PDF file contains embedded links that point to a known malicious redirector, ttraff.com, disguised with a keyword related to a Yamaha Raptor 660 manual. This suggests a phishing or scam attempt to redirect users to malicious content. The document body, though heavily obfuscated, contains the URL and the keyword, reinforcing the lure. The presence of numerous other links to Shopify domains, while marked as benign, indicates a pattern of link farming, likely to improve SEO for the malicious redirector.

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=yamaha+raptor+660+manual
    • http://wevino.animachristiretreats.org/uploads/1/3/0/7/130776008/4424f.pdf
    • http://files.ez-caregiver.com/uploads/1/3/1/3/131383318/wugoso.pdf
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/43469654433.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/sixusebiwebugaledesebivi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/tafijoner.pdf
    • https://cdn.shopify.com/s/files/1/0437/2601/2567/files/saralazewapedidezilozudi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3278/0701/files/bufazuwop.pdf
    • https://cdn.shopify.com/s/files/1/0430/3588/5725/files/45430598944.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/65806555907.pdf
    • https://cdn.shopify.com/s/files/1/0428/8475/9711/files/21275977570.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/83672989884.pdf
    • https://cdn.shopify.com/s/files/1/0435/9746/3715/files/runescape_misthalin_mystery.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/50398535586.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_off000053f9.bin
c55896f17336cc5408cc4d5edc1e82a90d08b8727ac3c4945ac56a45f15ff0f2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53F9 5140 bytes
font_01_sfnt_off00006544.bin
602351c2c5496e5b7f01c87f4e20a413f25bb538831c1a023e99d2dc085ed7a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6544 10388 bytes

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