Malicious PDF — malware analysis report

Static analysis result for SHA-256 2802744a532cb79c…

MALICIOUS

PDF

37.9 KB Created: 2020-08-11 17:11:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01cd4f71d0cfb2cb8cd5c00959fa201d SHA-1: 9461ec796d88095e0d0d40874b1cb940f0912740 SHA-256: 2802744a532cb79ca8aa9498321c68afbd7c298af2e48bfa8222693f3869c72c
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1200 Hardware Addends T1059.001 PowerShell

The PDF contains a link farm pointing to multiple external PDFs, with one redirecting to a known malicious URL. The ML classifier also flagged this PDF with high confidence. The document body contains obfuscated text and embedded URLs, suggesting an attempt to lure the user to malicious infrastructure.

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.cc/pify?keyword=lima+barreto+bruzundangas+pdf
    • http://jinagunup.newerag.com/uploads/1/3/2/3/132302780/3039102.pdf
    • http://bexozik.mrsswainsartclass.com/uploads/1/3/0/8/130814017/demomexifudagu.pdf
    • http://naduge.latifian.com/uploads/1/3/1/0/131070313/jozudaviwejuv-kafisazo-biferal-loferala.pdf
    • https://cdn.shopify.com/s/files/1/0447/8153/5389/files/mapa_krakowa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2797/files/sword_art_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/7007/0687/files/52125517264.pdf
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/56353351721.pdf
    • https://cdn.shopify.com/s/files/1/0449/7974/9022/files/air_waybill_sample.pdf
    • https://cdn.shopify.com/s/files/1/0433/7873/7302/files/landscape_company_profile_sample.pdf
    • https://cdn.shopify.com/s/files/1/0428/2833/3212/files/79623724436.pdf
    • https://cdn.shopify.com/s/files/1/0434/0659/0106/files/xixugamifunuxarixaju.pdf
    • https://cdn.shopify.com/s/files/1/0433/5586/5242/files/4162044296.pdf
    • https://cdn.shopify.com/s/files/1/0435/9893/8274/files/94543133396.pdf
    • https://cdn.shopify.com/s/files/1/0428/3128/2335/files/award_templates.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_off000056b4.bin
26fb99ab5ea18b33ed597141389176e5dbf8d7492aed4449864b06f7ee10f48a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x56B4 5460 bytes
font_01_sfnt_off00006932.bin
4a275decc17eded07332bdbc224474b6329c339f47a484afd4045e17b73467d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6932 9876 bytes

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