Malicious PDF — malware analysis report

Static analysis result for SHA-256 4230e0760ca5fd9b…

MALICIOUS

PDF

36.4 KB Created: 2020-08-18 19:27:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a012c90a2209f7de931475581751de5c SHA-1: 7719ec01fb1e14f9acf7a9e2f2ef2b260c9101ff SHA-256: 4230e0760ca5fd9b15a7202edd4cb0126c3e0f631afa78851b0c3a4073627711
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, with the primary link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text related to 'dental trauma guide luxation' and the malicious URL, suggesting a lure to trick users into clicking through to potentially harmful content. The ML classifier also strongly indicated maliciousness.

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=dental+trauma+guide+luxation
    • http://files.masteractorsbayarea.com/uploads/1/3/1/6/131607027/keviw-pusupekik-powekifazaj.pdf
    • http://files.crazytaillabradors.com/uploads/1/3/2/3/132303238/xekuzu.pdf
    • http://files.catenazzilab.org/uploads/1/3/1/3/131380899/zubadowijo.pdf
    • http://files.gameplayer.dk/uploads/1/3/1/4/131411688/1800786.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/tedukuza.pdf
    • https://cdn.shopify.com/s/files/1/0432/7945/0272/files/savupop.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/bikawasaron.pdf
    • https://cdn.shopify.com/s/files/1/0429/8113/0394/files/muzadifave.pdf
    • https://cdn.shopify.com/s/files/1/0434/2913/4501/files/wosavaxamalute.pdf
    • https://cdn.shopify.com/s/files/1/0429/8116/3157/files/pdf_catecismo_gnostico.pdf
    • https://cdn.shopify.com/s/files/1/0435/9228/6363/files/77863535336.pdf
    • https://cdn.shopify.com/s/files/1/0436/9973/2633/files/our_casuarina_tree_critical_appreciation.pdf
    • https://cdn.shopify.com/s/files/1/0438/2556/1757/files/clausura_2020_calendario.pdf
    • https://cdn.shopify.com/s/files/1/0434/3840/7845/files/12044068133.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_off00005203.bin
da3947ed303e5232e92b9e68964c7b19707b0e038a3ecbd87fef0e11e54a7e75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5203 5032 bytes
font_01_sfnt_off00006310.bin
2eb009e61685c21f524aa3d6645e59231a20ae593e2b1a046748683f66eea95c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6310 9920 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.