Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa534379091bc39…

MALICIOUS

PDF

43.1 KB Created: 2020-08-19 07:45:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b95d57389e5484511152f197f0ef7f94 SHA-1: 4c5b4fd9d3ce8fa7c1c02d22b7818f8450d788ee SHA-256: afa534379091bc39d4787ed5ba2b2d6f7e7a0d1643768eaa970b2dd55b6dfd0e
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one specifically pointing to a known malicious redirector. The ML classifier also strongly indicated maliciousness. The document body contains obfuscated text and URLs, suggesting an attempt to disguise the malicious intent. The primary attack pattern involves redirecting users to external sites, likely for phishing or malware delivery.

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=angular+formgroup+default+value
    • http://files.thepowerof3healing.com/uploads/1/3/1/4/131483154/nijavadokupe-zarifezenoj-jusuza.pdf
    • http://files.crosslakekids.org/uploads/1/3/1/1/131163559/95286.pdf
    • http://xalapirip.jamespcampbell.com/uploads/1/3/0/8/130874038/rajixi_korofadares_dudekoxiku_lexenamelinojub.pdf
    • http://geregav.jblep.com/uploads/1/3/0/8/130814297/jewesa.pdf
    • http://files.margueritelacorte.com/uploads/1/3/1/6/131637307/7748042.pdf
    • https://cdn.shopify.com/s/files/1/0437/7985/0398/files/7534340139.pdf
    • https://cdn.shopify.com/s/files/1/0432/8026/9462/files/bazijot.pdf
    • https://cdn.shopify.com/s/files/1/0429/4171/0499/files/ashampoo_music_studio_7_free.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/subararoxega.pdf
    • https://cdn.shopify.com/s/files/1/0438/1881/1552/files/ecological_balance_in_nature.pdf
    • https://cdn.shopify.com/s/files/1/0438/4171/6389/files/65483652122.pdf
    • https://cdn.shopify.com/s/files/1/0433/4790/2629/files/meniselije.pdf
    • https://cdn.shopify.com/s/files/1/0430/1747/0101/files/girulivuzi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7951/3752/files/gemagaxidemosukota.pdf
    • https://cdn.shopify.com/s/files/1/0434/0665/5642/files/lovenexazaxepa.pdf
    • https://cdn.shopify.com/s/files/1/0429/7415/0809/files/98387286269.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_off00006032.bin
210f690a83edf4a7c1076d696ccc5265beb57ee57809ceca587c61bae92d3c20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6032 5232 bytes
font_01_sfnt_off000071f9.bin
85f144e8b8b687711a7f62d34ac030a8d3ed8e6334d1c91bab2a178ab16c76da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71F9 14668 bytes

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