Malicious PDF — malware analysis report

Static analysis result for SHA-256 c354819896310431…

MALICIOUS

PDF

42.7 KB Created: 2020-08-12 18:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d60c7df1eb93734f7e519db314f6133 SHA-1: f66ebfab134de4f16775a8e590d0ba214655e15b SHA-256: c354819896310431ab28c86964ffc3ed5f5a6e48b142b3f9102a761778138c0e
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains the same URL and a reference to 'interesting facts about human body pdf', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify domains, likely to improve search engine ranking for the malicious content. No scripts were extracted from this sample.

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.cc/pify?keyword=interesting+facts+about+human+body+pdf
    • http://files.samanthagagnon.com/uploads/1/3/1/3/131398372/58a964.pdf
    • http://files.diymandalastones.com/uploads/1/3/1/4/131454024/dixedizun-nilig-xipulalokuwat.pdf
    • http://files.bmemf.org.uk/uploads/1/3/1/0/131070894/073def.pdf
    • https://cdn.shopify.com/s/files/1/0435/5463/5937/files/como_convertir_de_a_word_con_nitro_pro.pdf
    • https://cdn.shopify.com/s/files/1/0446/9496/2332/files/72787149936.pdf
    • https://cdn.shopify.com/s/files/1/0434/0698/3335/files/15759877873.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/dapofamezozobarimifa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4578/9606/files/solve_equations.pdf
    • https://cdn.shopify.com/s/files/1/0435/7881/8715/files/39224231761.pdf
    • https://cdn.shopify.com/s/files/1/0433/5294/8901/files/coran_bilingue_arabe_franais.pdf
    • https://cdn.shopify.com/s/files/1/0431/6259/9585/files/nezenudetolukigafid.pdf
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/patient_information_sjogren_s_syndrome.pdf
    • https://cdn.shopify.com/s/files/1/0437/3826/7809/files/40331156416.pdf
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/durinezojafiregagoputora.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_off000068cb.bin
1222988b36451756b123712f36bb5613c02081de3eb4b10c055129b344859957		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68CB 5716 bytes
font_01_sfnt_off00007c0d.bin
8797524f3c2da85e3ff3bec4398ce9c96de6f94d51f78606a5f7cfb83f90e5b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C0D 9912 bytes

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