Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ad98fba8b36756f…

MALICIOUS

PDF

74.1 KB Created: 2020-12-20 07:26:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 05de993ba7560396d9fbf1a1ce080014 SHA-1: 154d665e0cad28ac45697446ed82108a8bdb0f05 SHA-256: 2ad98fba8b36756fd6e36717c34b742ed67802d3b4b2e79d8944a16ffd712563
154 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL is likely intended to lead the user to a phishing site or a download for a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffmen.ru/strik?utm_term=pride+and+prejudice+era+clothing In PDF document text
    • https://static.s123-cdn-static.com/uploads/4420776/normal_5fd03919111a4.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/8b32c66d-4b19-4418-915c-c47c390a7645/photography_contract_template_south_africa.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/85873292021.pdfIn PDF document text
    • https://s3.amazonaws.com/tarajix/supub.pdfIn PDF document text
    • https://s3.amazonaws.com/wunojipu/jabukupewameda.pdfIn PDF document text
    • https://s3.amazonaws.com/tezude/ambarsariya_movie_free_filmywap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8d0e639-85fa-4c8b-95bf-38b4550ba0e4/44664221846.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c3421c8c741314533f60/t/5fd72ad4acac596b0cd490f2/1607936726454/gopevipumipufevod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/293f02f0-f911-401f-9a0c-1b3a19d2cc29/3709117818.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2830cc30a162e0c5caa26/t/5fcff92b3679834d723c0a89/1607465259648/14428297296.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/xuvazezewapusaworonuk.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/jovatudil.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4275f0ff-7be3-4538-806e-06b5a0355e1b/lee_high_school_jonesville_va_faculty.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/74700647685.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_off0000e67a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67A 5232 bytes
SHA-256: 92248bc85dde76f3906759dc2141aaad49edb5de6ec174f30c5cb7d45f699dfa
font_01_sfnt_off0000f846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF846 10308 bytes
SHA-256: a9701e2fcc5d36551d85ba3a61145919706f2cea9c92e16c7ac611f2d63babd7

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