Malicious PDF — malware analysis report

Static analysis result for SHA-256 217309a014b9dcdb…

MALICIOUS

PDF

61.5 KB Created: 2020-07-30 12:48:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5caedddac2f44723bcc11bbfcf783c45 SHA-1: f9c9c20dddae8c25d1f7de12699d890351349b95 SHA-256: 217309a014b9dcdb108b812a3526d0c509f4aa1e9ee7be5700aec978817cb05c
120 Risk Score

Malware Insights

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

The PDF file exhibits malicious behavior through a link farm, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics. The primary malicious URL identified is https://ttraff.com/pify?keyword=conductas+sexuales+anormales+en+la+infancia+pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool sometimes used to create malicious PDFs.

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=conductas+sexuales+anormales+en+la+infancia+pdf
    • http://files.agrawpetfood.com/uploads/1/3/1/8/131856331/4131803.pdf
    • http://files.positivescanning.com/uploads/1/3/1/0/131071137/vuxalavezimuwiwafod.pdf
    • http://files.chagrinvalleyrestaurantweek.com/uploads/1/3/1/6/131607407/bazegow.pdf
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/52387390286.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tapowizilefaj.pdf
    • https://cdn.shopify.com/s/files/1/0430/8733/1481/files/gunetutigaka.pdf
    • https://cdn.shopify.com/s/files/1/0429/6710/5687/files/17285620409.pdf
    • https://cdn.shopify.com/s/files/1/0430/8094/1721/files/mivikurejesifawufarawod.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6845/files/28448289988.pdf
    • https://cdn.shopify.com/s/files/1/0440/6607/8870/files/18418399461.pdf
    • https://cdn.shopify.com/s/files/1/0427/9032/2335/files/wikikoxenafilefefaf.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/remopiwipirevasobewar.pdf
    • https://cdn.shopify.com/s/files/1/0433/7542/7735/files/4753630354.pdf
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/vakafoxonuxelo.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_off0000b00b.bin
c44ab5f4ce95680f42ee4635374e503231eb915cb7822c98a7db52ec2d76e52c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB00B 5272 bytes
font_01_sfnt_off0000c1e5.bin
c3ad43ebe0946de76265769b41f73e0bf481a3154e394f10d0852fd075c389e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC1E5 11332 bytes

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