Malicious PDF — malware analysis report

Static analysis result for SHA-256 717ed4116b5a8b4e…

MALICIOUS

PDF

66.1 KB Created: 2020-12-20 20:01:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 502c11877c84747694fdd9270552491d SHA-1: f6bd400d3f3022ae998377ffba95716108e827d8 SHA-256: 717ed4116b5a8b4e8ca4152a12662f968a7f3c98160993f55d48375f7be7c3d7
102 Risk Score

Malware Insights

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

The PDF contains a critical heuristic indicating it's a malicious redirector, pointing to a URL that is part of known malicious infrastructure. The document body, though heavily obfuscated, contains text suggesting urgency, aligning with phishing lures. While no scripts were explicitly extracted, the nature of the redirector and the ML classification strongly suggest the PDF is designed to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://cctraff.ru/aws?utm_term=what+does+contemplate+mean+in+seekers+notes In PDF document text
    • https://weduzoviduluwiz.weebly.com/uploads/1/3/4/3/134385862/1875228.pdfIn PDF document text
    • https://livabawixegi.weebly.com/uploads/1/3/4/3/134320323/dakowenujamexujuzup.pdfIn PDF document text
    • https://fipoxojumudex.weebly.com/uploads/1/3/4/6/134649093/susoxej-gepevujabe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380213/normal_5f92ebbd2cdf5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/44334421574.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc297e6df132613bbc87a99/t/5fc5ba4608845d0924514294/1606793798915/pixutesidiw.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f06b104edf1d7780fa74/t/5fc130e5bc819f1cf403232b/1606496486441/ready_player_one_imdb_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/meludav/mexax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/999fd3bb-a8c0-4126-9412-71e257c8e59b/7113616197.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcde842ecb86110b134fcfa/t/5fd139f7cfa2bd52eaff71ff/1607547384514/music_for_ballet_class_dance_with_margot.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f7fbe9fc3622d5227cd2/t/5fc780c0a038a451bcefd43e/1606910148802/vafozasevatew.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56aeda5bc066edfc3e318/t/5fceb576e0c378597cf9e8e2/1607382393492/fapegufe.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_off0000c652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC652 5392 bytes
SHA-256: 5ab3314cb3de33697dd4198eaab2c300bf15cc9180285ee6896fc2454ca3ca00
font_01_sfnt_off0000d886.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD886 10196 bytes
SHA-256: 46849c39807b10255a1e7d976073174c5985d1e07ede4e50b48b596e5018158d

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