Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b08b2e3a0efc8e5…

MALICIOUS

PDF

49.6 KB Created: 2020-10-08 19:26:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 3b089aa4d439c9db4a0672bf0b12ebed SHA-1: a83224a60f2e8f60c9f676c1c464b6c82b339682 SHA-256: 9b08b2e3a0efc8e58ff45086547203f1309c6a126be1cf5db4c136543ed032a0
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, with at least one identified as a malicious redirector. The ML classifier also strongly indicated maliciousness. The document body, though heavily obfuscated, contains URLs that are consistent with link farming or phishing lures. The primary attack pattern involves directing users to external, potentially malicious, websites.

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://gettraff.ru/strik?keyword=baikal+mp+155+manual+pdf In PDF document text
    • http://files.cazooska.co.uk/uploads/1/3/0/7/130775111/lizosowegoker-buwido-muzulidigiburu.pdfIn PDF document text
    • http://files.erinkaymchugh.com/uploads/1/3/1/8/131857284/bafunob.pdfIn PDF document text
    • http://files.sharhazlah.co.uk/uploads/1/3/1/3/131379699/fogibux-kokezisuvebeb.pdfIn PDF document text
    • http://files.hezronspringer.uk/uploads/1/3/0/7/130738785/zubadibeviwurore.pdfIn PDF document text
    • http://files.2ourhealth.net/uploads/1/3/2/7/132712015/mawaradukawiwaxuwu.pdfIn PDF document text
    • https://site-1039190.mozfiles.com/files/1039190/lupuwekezebufel.pdfIn PDF document text
    • http://novudo.shcdesignsllc.com/uploads/1/3/0/7/130740190/fe246.pdfIn PDF document text
    • http://gafizumo.tarjac.com/uploads/1/3/1/3/131384714/4325290.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/1/0463/3935/8882/files/47193527975.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0478/3534/9151/files/stick_control_download_italiano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/scatter_graphs_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4660/8794/files/dubuque_senior_high_school_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0076/8930/files/yamaha_yz125_for_sale_2006.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_off000084af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84AF 5200 bytes
SHA-256: 3d50f6c54254d0d14a6c281af5e917deaacf845a8fc9fdb3f92cc691d13d8a38
font_01_sfnt_off00009663.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9663 10424 bytes
SHA-256: fcd1ad06beb15573e1438c7ffb21c2224bae40c4e6e915733c3004b0a7ae4b87

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