Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3a3e95cbba4fa3f…

MALICIOUS

PDF

42.7 KB Created: 2020-08-21 02:00:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e8a9d4ee231bda8d9c2de363a1e8293 SHA-1: 7996d828e38a0f35d979706e11c5ad301dee0796 SHA-256: d3a3e95cbba4fa3f1f69647cf73f4649f07c33dd41fdcf1de448abe3ab059a7c
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 for SEO poisoning or to redirect users to malicious sites. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=auschwitz+guided+tour+meeting+point'. The document body, though heavily obfuscated, also contains this URL and numerous other links hosted on Shopify and other domains, suggesting a link farm designed to distribute traffic to potentially harmful destinations.

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=auschwitz+guided+tour+meeting+point
    • http://files.moorefamilynewfoundlands.com/uploads/1/3/0/8/130874541/60bf6e43a3.pdf
    • http://files.viaggistudioalondra.com/uploads/1/3/1/4/131408024/2697316.pdf
    • http://files.teressafoss.net/uploads/1/3/1/4/131452799/totatuzivika.pdf
    • https://cdn.shopify.com/s/files/1/0427/5883/2294/files/anthoceros_sp.pdf
    • https://cdn.shopify.com/s/files/1/0435/0862/9663/files/psp_gba_emulator.pdf
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/megili.pdf
    • https://cdn.shopify.com/s/files/1/0463/4286/5057/files/59040315166.pdf
    • https://cdn.shopify.com/s/files/1/0437/1474/0373/files/lagaj.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/38655606666.pdf
    • https://cdn.shopify.com/s/files/1/0432/5307/2022/files/33831421011.pdf
    • https://cdn.shopify.com/s/files/1/0435/4634/5636/files/bose_qc35_ii_firmware.pdf
    • https://cdn.shopify.com/s/files/1/0433/3505/7566/files/nikolai_gogol_the_overcoat.pdf
    • https://cdn.shopify.com/s/files/1/0431/4798/5053/files/treatment_of_heart_failure.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_off000068a9.bin
b8c6c4ab7e12c5cfa7484994d5a32ab7bca51a4b431822f6228c857734cc05f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68A9 5376 bytes
font_01_sfnt_off00007ae2.bin
5da944c103886f394ae62bb0dbfa3bdcd944cc29c4322024ae1bf7dc2bb3afca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE2 10352 bytes

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