Malicious PDF — malware analysis report

Static analysis result for SHA-256 90a226df1b9e034d…

MALICIOUS

PDF

50.4 KB Created: 2020-10-05 15:12:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a3686bca2270d7a48ca587cc7e06b6bf SHA-1: 8eedd03f1f37d24f04a7513bee9e5d0fb85a600f SHA-256: 90a226df1b9e034db18feff0920357b3c0bec8e0eed0a92f8aba5159a529f8a6
102 Risk Score

Malware Insights

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

The PDF contains embedded URLs, with one specifically identified as a malicious redirector. The document body, though partially corrupted, contains text suggesting it is a lure for 'Bahria building by laws pdf'. The ML classifier strongly flagged this PDF as malicious, and the presence of a redirector link indicates an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ggtraff.ru/strik?keyword=bahria+building+by+laws+pdf In PDF document text
    • https://site-1043545.mozfiles.com/files/1043545/duvededujogumakekikavut.pdfIn PDF document text
    • https://site-1036918.mozfiles.com/files/1036918/79238276025.pdfIn PDF document text
    • https://site-1036699.mozfiles.com/files/1036699/76454689024.pdfIn PDF document text
    • http://files.coldwatersoapco.com/uploads/1/3/2/7/132740214/gefizupa.pdfIn PDF document text
    • http://ruseseg.lykebeer.com/uploads/1/3/1/3/131398252/nijujijawurini.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2257f79-f1ba-4cea-9fd1-cf349d1f60aa/lizepigimadaxitaredijuluj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9f7bc91-d2d5-4eaf-96dd-df445e4dbd1c/48250420411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9050/9977/files/zunumewoxusuwiroli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5485/3027/files/the_grey_fox_skyrim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7149/9159/files/waccamaw_high_school_coronavirus.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_off00008771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8771 5688 bytes
SHA-256: 7d6a3b2d5955efa696f391e1cac3837a61c5ebfe8b807f3d7226b5d3173b9de2
font_01_sfnt_off00009ae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AE0 10040 bytes
SHA-256: 2dece0c2c944ad927747c62de33f0000298b50c1e166c6716fcc8ea33fb8b0dd