Malicious PDF — malware analysis report

Static analysis result for SHA-256 404e19569fc7e315…

MALICIOUS

PDF

47.8 KB Created: 2020-08-23 01:09:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02d70dd663f4c1a890574d345cc9fbc7 SHA-1: cba12768cfbb27ba6bb649ac87084709d79448f3 SHA-256: 404e19569fc7e3151ca969ed2d0e084bfe4c839332c1a2dfaafb380e0e0012a1
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to a high number of embedded links, many of which point to a redirector service. The document body contains a keyword related to car parts, suggesting a lure for users interested in such topics. The primary malicious URL identified is ttraff.ru, which is likely used to funnel users to further malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=2017+chevy+trax+performance+parts
    • http://rovune.christinareid.org/uploads/1/3/1/6/131636664/387818.pdf
    • http://files.tracyeducatorsassociation.org/uploads/1/3/1/4/131453934/4428832.pdf
    • https://cdn.shopify.com/s/files/1/0431/6938/2557/files/miveguje.pdf
    • https://cdn.shopify.com/s/files/1/0432/5369/4626/files/82549763833.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wunize.pdf
    • https://cdn.shopify.com/s/files/1/0437/4098/7544/files/45827385679.pdf
    • https://cdn.shopify.com/s/files/1/0429/1962/4870/files/tixenolugip.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gofifarigomikidapowokov.pdf
    • https://cdn.shopify.com/s/files/1/0434/0265/7957/files/nolerup.pdf
    • https://cdn.shopify.com/s/files/1/0436/3649/0398/files/lavixitituwovomabupeka.pdf
    • https://cdn.shopify.com/s/files/1/0434/5279/2982/files/72064242594.pdf
    • https://cdn.shopify.com/s/files/1/0434/1507/7022/files/filuxijebaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/40680096564.pdf
    • https://cdn.shopify.com/s/files/1/0435/3264/8602/files/ethical_behavior_meaning.pdf
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/apache_poi_convert_excel_to.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cf1.bin
0f82385cc48be908c6619b4612b5acf57885edadc63354a5bf0926610ed862e4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF1 5504 bytes
font_01_sfnt_off00007f8b.bin
5cdb3677671eccf943a862531e0e2fc8b3efc8b93b1cbb67d036f5ab494fbfd3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F8B 10664 bytes
font_02_sfnt_off0000a3fe.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA3FE 4324 bytes

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