Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5ff13196d0578e…

MALICIOUS

PDF

42.5 KB Created: 2020-08-22 08:05:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b339a79df93f41542c71abb2eb975f SHA-1: eb080b9dbd06e8710fed4ee95286eff8bdc560f2 SHA-256: 7a5ff13196d0578e912b1f85788514027052edc1b35b0baa22746ce3f249a579
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically the URL https://ttraff.cc/pify?keyword=best+borescope+for+android+phone. The document body also contains this URL and numerous other links, suggesting a link farm or SEO spam tactic. The ML classifier strongly flagged this PDF as malicious, indicating a high likelihood of malicious intent.

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.cc/pify?keyword=best+borescope+for+android+phone In PDF document text
    • http://files.creativeartsoasis.com/uploads/1/3/0/7/130776254/259150a8bc1cd7b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5325/9679/files/33263945107.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/2932/3927/files/deferred_tax_payable_balance_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1368/4891/files/31202938598.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8110/4541/files/zepimefunew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/raxejugukudebitefirane.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9338/5633/files/nuliza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7555/7793/files/unity_invoke_with_parameters.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1244/7652/files/61117145067.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1044/8798/files/miburamitewuzijiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0009/4112/files/77019899408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4764/9429/files/puntajes_ser_bachiller_2020.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067e9.bin
45a157ee04ba1299e8e66a1b092c4b83f4fd854a78528b423ad4b1dae1f94687		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67E9 5400 bytes
font_01_sfnt_off00007a35.bin
c3d678f53a51446e7520feea80d96eea489b7bb46f48ecb9fa06ddbeaab8670c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A35 10316 bytes

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