Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f110c614506ddcb…

MALICIOUS

PDF

33.9 KB Created: 2020-08-28 07:50:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab01f8456fcb65096f46907ef08d9909 SHA-1: c5e192e65797d0450d4845c9009dd09eb815ee94 SHA-256: 1f110c614506ddcb78428ce49a469c3f450e3542678ceedcef13ce4ad7c1b45f
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, including one pointing to a known malicious redirector. The ML classifier also flagged this PDF with high confidence. The embedded links suggest a phishing or credential harvesting attempt, leveraging a link farm to obscure the ultimate destination.

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.link/pify?keyword=progmatic+full+2018
    • http://lisafakoj.paragonshows.com/uploads/1/3/1/8/131872225/nawipaduv_madumularage_muwuwepusipel_kalenitu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2785/6536/files/cristo_el_anarquista.pdf
    • https://cdn.shopify.com/s/files/1/0437/9135/1969/files/hard_anodized_aluminum_process.pdf
    • https://cdn.shopify.com/s/files/1/0440/7581/0966/files/bohr_model_of_an_atom.pdf
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/rumonabov.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/meio_ambiente_e_sustentabilidade.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/enlace_sigma_y_pi.pdf
    • https://cdn.shopify.com/s/files/1/0434/6285/2761/files/chess_playing_images_free.pdf
    • https://cdn.shopify.com/s/files/1/0432/8452/9310/files/17389551731.pdf
    • https://cdn.shopify.com/s/files/1/0448/0414/5309/files/analog_multimeter_manual.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_off00004644.bin
7541a2f7cc7d2ae7b7edf075e38d85f0b859f658b29346c3885a5ae151b83222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4644 5544 bytes
font_01_sfnt_off0000590b.bin
082551ceb91f605a8f295520e410026428e929793c674694826b1d9a66f1546f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x590B 10040 bytes

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