Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f2e0ef94a7be730…

MALICIOUS

PDF

38.7 KB Created: 2020-08-01 13:32:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e21e39aa1c953c699a717491a5c2bc22 SHA-1: c70c70daf5c8b029ce0c6727ae9be54f96b5bc52 SHA-256: 0f2e0ef94a7be730ef0ca9acd7b013962bdf97b67afd591fb572db5f8abe671b
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=kentucky+weight+distance'. The ML classifier also strongly indicated maliciousness. The document body appears to be corrupted or obfuscated, but the presence of the malicious redirector and the link farm strongly suggest an attempt to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=kentucky+weight+distance
    • http://files.natureswaybotanical.com/uploads/1/3/0/8/130873795/7111074.pdf
    • http://files.officialmyrtlebeachsports.com/uploads/1/3/0/8/130813821/6082037.pdf
    • http://files.albertoniego.com/uploads/1/3/0/7/130776812/garexotiku_wivopevatuki_movuner_nugibotuso.pdf
    • http://files.ps244q.org/uploads/1/3/0/8/130814717/topuwitasideladakewu.pdf
    • http://files.worldwide4travel.com/uploads/1/3/1/0/131071145/notabizodifefewol.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/6585/1542/files/xenuzu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8153/9483/files/96026217513.pdf
    • https://cdn.shopify.com/s/files/1/0436/8983/6697/files/37949535236.pdf
    • https://cdn.shopify.com/s/files/1/0437/6097/6021/files/sumijexaluvatatavab.pdf
    • https://cdn.shopify.com/s/files/1/0435/4339/6506/files/genibupaxowo.pdf
    • https://cdn.shopify.com/s/files/1/0431/0152/0029/files/gazisef.pdf
    • https://cdn.shopify.com/s/files/1/0435/5253/8773/files/battlestar_galactica_the_plan.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/10374462198.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/37741658126.pdf
    • https://cdn.shopify.com/s/files/1/0437/3735/0309/files/botulijaku.pdf
    • https://cdn.shopify.com/s/files/1/0431/4526/5312/files/rivazev.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000059b7.bin
43e11c49f417fe68f05ee06ee02ef738ab71709258de374c3a9fde79bf81d543		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59B7 5300 bytes
font_01_sfnt_off00006bdf.bin
47644b9455d74117b1b41eb9c1e55d36f678b93004f69d09533e8c7172c1d02e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDF 9892 bytes

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