Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3cbd3d6af11c9c3…

MALICIOUS

PDF

40.8 KB Created: 2020-08-19 22:02:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b70403115ce92b9122601715d2aebe15 SHA-1: 0eab8b945c8cc56b5a717578249ee78eff9d6666 SHA-256: d3cbd3d6af11c9c3ffbbb573d50f3d52e32b74040bde3e9a0bff3df2704b7c04
150 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 pointing to 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The PDF also contains a link farm heuristic, indicating a large number of outbound links, many hosted on Shopify. The ML classifier strongly flagged this PDF as malicious. The overall pattern suggests a phishing attempt using a deceptive link.

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.com/pify?keyword=live+football+streaming+apk+windows
    • http://files.justinpearsongalleries.com/uploads/1/3/2/8/132815015/7302710.pdf
    • http://files.bethanyshayporteous.com/uploads/1/3/1/6/131606111/dugilegukuwe-radimaberidu-pokeru.pdf
    • http://nepewab.asbopticianry.com/uploads/1/3/2/3/132303035/9391520.pdf
    • http://files.makeupbybb.com/uploads/1/3/1/3/131381712/zinomezumajiwet_xamaminiwoxesus_radan_gekero.pdf
    • https://cdn.shopify.com/s/files/1/0431/7216/7841/files/57187507890.pdf
    • https://cdn.shopify.com/s/files/1/0432/1076/8546/files/sosopavanosisa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/76781912234.pdf
    • https://cdn.shopify.com/s/files/1/0435/2396/5080/files/learn_business_english_writing.pdf
    • https://cdn.shopify.com/s/files/1/0438/8113/6296/files/877-_417-_4551.pdf
    • https://cdn.shopify.com/s/files/1/0431/5535/7852/files/6983326264.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/tevejasomesusovu.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/kusigazokudap.pdf
    • https://cdn.shopify.com/s/files/1/0432/5326/8642/files/kefoxirujizobezewuk.pdf
    • https://cdn.shopify.com/s/files/1/0435/3874/3450/files/skymet_monsoon_report_2019.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_off000060d1.bin
dd37f932a32fdc53adfa5c51cdd9c6fc7b195cfe49ae7732446a12b44bc1846e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60D1 5656 bytes
font_01_sfnt_off00007405.bin
23adea42cfda1ee2a5fcd7a28ef326d5c3ff70bac5f2aa60849831647462fb65		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7405 9992 bytes

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