Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cfe1db6f2fc8a47…

MALICIOUS

PDF

44.9 KB Created: 2020-11-05 07:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d58cfb563748dca041a85f2fd3a2de01 SHA-1: 2db61c9669918ba4fa6ee3408fb1f235437acd5a SHA-256: 0cfe1db6f2fc8a47631d4f423404e5aa024e8ab85ef5b15ee4e41eb0e82d31e8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external PDF files. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.link/123?keyword=123+movies+star+wars+the+force+awakens'. The document body also contains obfuscated text and URLs, suggesting an attempt to disguise its malicious intent. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://ttraff.link/123?keyword=123+movies+star+wars+the+force+awakens In PDF document text
    • https://cdn-cms.f-static.net/uploads/4457592/normal_5fa0e536998db.pdfIn PDF document text
    • https://raxuzorufureraw.weebly.com/uploads/1/3/0/7/130775378/0b54b8acd62f03b.pdfIn PDF document text
    • https://jijibaduwa.weebly.com/uploads/1/3/4/4/134495912/270fa297c810af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366633/normal_5f88d04aa8f9c.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/memul/battletech_mech_sheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/3163/7415/files/wuxikaxiwuvubizakerivig.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/rajomagibuvekaranuranare.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/naruto_blazing_apk_mode.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/worcester_county_ma_conforming_loan_limits_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/faxewesi.pdfIn PDF document text
    • https://s3.amazonaws.com/tamobalasu/dobogiwu.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/computer_programming_books_in_urdu.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/9063013332.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9034b175-9275-44d7-810a-0c286499fce3/nigisizikadikozubinuxuki.pdfIn PDF document text
    • https://s3.amazonaws.com/betefowubevat/77990035185.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_off00006ffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FFD 5560 bytes
SHA-256: fa90fb8a835bfa304f9698f367edd337de1a45f075ea519aa7801b47d34d6967
font_01_sfnt_off000082d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82D9 10332 bytes
SHA-256: 5a756b983bbd7f5aa51d3fbb6e2709b3a14031fbf30d837755c1c71eceb95f6f

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