Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d8df96a20601cf9…

MALICIOUS

PDF

45.3 KB Created: 2020-09-30 07:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 87ca67231647d925148e3b21499f0f6e SHA-1: 6f547c9904a949f2a8c97443f4ae3102d68e1280 SHA-256: 2d8df96a20601cf9106fbf5e55b8f1423c2267472228abba49773df92d44ca7c
94 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, indicating a malicious intent to lead the user to a harmful site. The ML classifier also strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or malware distribution scheme, likely initiated via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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=que+es+la+caseina+pdf In PDF document text
    • http://kobozinof.therachihealing.com/uploads/1/3/0/7/130740368/d1edd4.pdfIn PDF document text
    • http://puzege.phisigmapidavis.com/uploads/1/3/1/3/131379730/sujipijelenewurex.pdfIn PDF document text
    • http://files.angelagoodetaylor.com/uploads/1/3/1/4/131407357/robonodirexoterekan.pdfIn PDF document text
    • http://files.bcdiscsports.com/uploads/1/3/2/3/132303028/vananajomom.pdfIn PDF document text
    • http://files.harrisondomain.org/uploads/1/3/1/4/131408172/2013890.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/acb6149b-dfce-4143-857b-39d69ef2b180/64591975184.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/975a6989-3fe8-4c7f-8880-72e02c499cc3/49017692466.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1bbff59-4ccc-42dc-8647-5a89de61e730/mofuwiliz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87283357-ea5b-4c14-944d-c02a6e182ed6/68211726869.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a257193-10c1-4091-829d-1db02658b07c/29202820781.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5081/0014/files/22219342301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1536/2984/files/22288564319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2174/5822/files/36641931000.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_off00006f81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F81 5112 bytes
SHA-256: 08ffc2bc0220fa8e91252c1839ad4e4114a00b364fe2dda9808c58dd6e28ad06
font_01_sfnt_off000080fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80FC 11824 bytes
SHA-256: 30bac4c0888a98728c0c0cdb461843195c4ef5c9f2af021edfe88cd6e6e759a5

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