Malicious PDF — malware analysis report

Static analysis result for SHA-256 f86f75d91bbb422e…

MALICIOUS

PDF

71.8 KB Created: 2020-12-05 13:43:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 1843ca71c5da3a764cda0cbf29f9357e SHA-1: 6a8d6fb14d8a70160b0d40171de34101d6566254 SHA-256: f86f75d91bbb422ef8d815da1bc5a450d085ad0df068ee254838228c8e503352
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a link that redirects to a known malicious URL, disguised as a manual for a Dewalt 720 radial arm saw. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the embedded link is the primary indicator of compromise.

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
  • 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://cctraff.ru/aws?utm_term=dewalt+720+radial+arm+saw+manual In 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/fddac9aa-4f3a-4125-a735-dde715a837ec/gidiroruro.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10afc403f5353fd968892/t/5fc3b941e18c5c478e6d1cc8/1606662465482/rawaxavibaxovagu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e80068612547ed5e2b99/t/5fc183e34e98326c0249c211/1606517733486/is_gravity_positive_or_negative_work.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0028ac14dfd36feec75cc/t/5fc41715f81c9a2a0c2256ef/1606686486209/porafidejuxonutuvesefet.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/cover_letter_template_word_customer_service.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5169dbe9b69395125da21/t/5fcb42e57ab0f364aba9a127/1607156455975/strategic_management_partners_address.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19d720a2757459be7f0be/t/5fca85cc5d0bbc103b0f6054/1607108048860/downloadable_free_editable_checklist_template_word.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05eb3362-2454-4618-ba70-8cca66446518/80571268335.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d49a16f6d44b07be6b5d/t/5fc3d1e84f9837572054d428/1606668777474/96418788574.pdfIn PDF document text
    • https://s3.amazonaws.com/wavunot/sijumetiwilajileli.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc100ee92c50b1a1e781c95/t/5fc346fcfa04221c71898e89/1606633216201/for_the_sake_of_all_report.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67727bd14ff0dd2c2c47f/t/5fc8bc5fd6e0cc37e343be4a/1606990947194/mirudonezakulif.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc14748c89e1c4b8fc0f61a/t/5fc7b4a493ad1a48122595cd/1606923436004/valulup.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe3fdbeaf37e3b64677087/1606303708170/selling_receivables_occurs_when_an_account_becomes_uncollectible.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfd6e2c6d96458361c2338/t/5fc2cb54f3de5e49b5c09d8e/1606601557380/pixelmon_shell_bell.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_off0000d964.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD964 5416 bytes
SHA-256: 8e473b5926311dcbfc672852c45cd4666c635041fab59e0a5fb0dd53922035b0
font_01_sfnt_off0000ebd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD7 10904 bytes
SHA-256: 44e08d2f8ab28f726af6d767f8fd4b0392b27dccbe7e61ba2513bd43d20652c7

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