Malicious PDF — malware analysis report

Static analysis result for SHA-256 45771cc5df13e504…

MALICIOUS

PDF

87.5 KB Created: 2020-12-18 03:09:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 978614328c9a6c5a8c1402aa52ac5ebd SHA-1: 982723a8461da2dbff2cbef0dd51df6c6b8b2988 SHA-256: 45771cc5df13e504d0d5a99cedb992e22ad2fdfff872634f4bc36b04dddaf8c2
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, identified by heuristics as a potential phishing or malware lure. The document body, though heavily obfuscated, contains text that mimics a search result for a product, suggesting a social engineering tactic to entice clicks. ClamAV and ML classifiers also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/strik?utm_term=best+buy+galaxy+note+9+screen+protector PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4482623/normal_5fd97390e199c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe0c134e98326c02d75626/1606290455071/34621304350.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/25365796868.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/business_partnership_agreement_india.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53225b8467722f1efea8f/t/5fd045a65c296e7a686ffe18/1607484839989/sukezakewijopomukofip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca319fe0-117a-4d0c-b51a-9d31b1b1f65c/pepupijosefazukefi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf49f54e98326c02069f39/1606371831052/eco_column_lab_report.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce205dccd2b773201d4b23/t/5fd6d789acac596b0ccc53a8/1607915404280/vuwebogo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d2b90a2757459bfc0ed4/t/5fcfcb7c221df657ad40f1b9/1607453564905/agl_energy_company.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc144dc68612547ed60a5eb/t/5fce9c12cf45d6767ce56770/1607375890658/80103733419.pdfIn PDF document text
    • https://s3.amazonaws.com/bipepezuwed/bratz_forever_diamondz_game_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/jozexotilesije.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6ebfc418d7934ac73dcfc/t/5fd1afe2871f8c6e595a4669/1607577573325/98585099818.pdfIn PDF document text
    • https://s3.amazonaws.com/wudibirewuduto/35708063980.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_off000116b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B0 5616 bytes
SHA-256: d0610f89a7a72a26f7ede4d5354edfacfc50d33fdb84c979d149fce282a241ff
font_01_sfnt_off000129e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129E9 11452 bytes
SHA-256: d17f811c3958c2b3ed61339678a97fe4e25ea2d0e23c21f6cb0c99b735cdf199

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