Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec78fd54a3722a0c…

MALICIOUS

PDF

44.0 KB Created: 2020-08-28 12:55:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1964564fa52b2ebfdec94cbcf60ce8cf SHA-1: e25fef16eeb727b0d2351b344a86624663d8d907 SHA-256: ec78fd54a3722a0cfb798f4cae097f2dffe707e224148700e213eeb119c7f4d6
152 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.ru/pify?keyword=watch+how+to+be+single+movie+online', is identified as a malicious redirector. The document body also contains this URL and other links to PDF files hosted on Shopify, suggesting a link farm or redirection scheme. The ML classifier strongly flagged this PDF as malicious, supporting the conclusion that it is designed to lead users to harmful 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=watch+how+to+be+single+movie+online
    • http://files.lifestylehealthcentre.com/uploads/1/3/1/4/131437147/musewuninudalet.pdf
    • http://files.extractivism.net/uploads/1/3/0/7/130739916/jakesofugepozoviwa.pdf
    • http://vivave.donjitsudodojo.com/uploads/1/3/1/4/131453197/wapixiduvanitigom.pdf
    • http://files.scubedproductionsinc.com/uploads/1/3/1/1/131164573/pogifopejupas.pdf
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdf
    • https://cdn.shopify.com/s/files/1/0432/3203/4976/files/vajopetolufegulo.pdf
    • https://cdn.shopify.com/s/files/1/0434/8415/1974/files/toro_lawn_mower_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0437/1972/1115/files/2979275189.pdf
    • https://cdn.shopify.com/s/files/1/0438/9748/7512/files/13339097159.pdf
    • https://cdn.shopify.com/s/files/1/0439/1128/2843/files/pvc_corrugated_sheet_sizes.pdf
    • https://cdn.shopify.com/s/files/1/0427/4031/8375/files/sintesis_protein.pdf
    • https://cdn.shopify.com/s/files/1/0432/6172/2786/files/definition_of_leadership_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/8510/3255/files/rajajufupirusolevizozul.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6023/files/authorized_king_james_bible_1611.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_off00006cc6.bin
19a147c7c4a1df570fd50b3b7daeefaf14523ed757fc03f857946d1d2586828d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CC6 5424 bytes
font_01_sfnt_off00007f2c.bin
f7e6ffdfbaf5c89abdc3c29dae176fb26a17ad42ef35cc6e08cc96d6a18061e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2C 10532 bytes