Malicious PDF — malware analysis report

Static analysis result for SHA-256 dadd82d38a68eecb…

MALICIOUS

PDF

66.0 KB Created: 2021-01-10 07:00:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 02c1857e4f53452d4a1ee3ebe0c1cd49 SHA-1: 7f3846d121d27e6dd8f96ff32cf524952176d3d5 SHA-256: dadd82d38a68eecb70b20cc7a7c8a5860b9856b0512533463c6d406bcac547b8
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The heuristic firings indicate a critical risk due to the presence of malicious redirector links and a PDF link farm, suggesting an attempt to drive traffic to malicious sites. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://ggtraff.ru/123?utm_term=how+to+make+hocus+pocus+book+of+spells In PDF document text
    • https://pewovorawegoxuv.weebly.com/uploads/1/3/4/3/134351704/2ba9bb4bcff269.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/niredunoz.pdfIn PDF document text
    • https://midusafamiriron.weebly.com/uploads/1/3/4/7/134702540/torarigevasuwarokeb.pdfIn PDF document text
    • https://mimasalidapu.weebly.com/uploads/1/3/4/4/134466186/rowomis.pdfIn PDF document text
    • https://cdn.sqhk.co/taxeseta/igijedM/hot_wheels_ultimate_garage_playset_replacement_parts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456140/normal_5ff772af8814c.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/libeganot/2123859783.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/bed_cet_syllabus_2019_download.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/82532432224.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/nafajoburefijawarej.pdfIn PDF document text
    • https://s3.amazonaws.com/sorogamat/lyndhurst_ohio_police_reports.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_off0000c504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC504 5416 bytes
SHA-256: 76be960960d8f33c6b8893f1d475890a1959336df053a98905774701ec1fee10
font_01_sfnt_off0000d759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD759 10448 bytes
SHA-256: 223e45c63fb514bc440c42c549ddf88fc900a0cd3602459fbe804db5445bd9b5

Open this report in the interactive analyzer, or submit your own file for analysis.