Malicious PDF — malware analysis report

Static analysis result for SHA-256 589c571736c807c7…

MALICIOUS

PDF

58.3 KB Created: 2020-11-11 02:14:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: b89ce6667466496761b373ad74060f7e SHA-1: 44b2cad1d3260b9a9cc5f4e1b58487325bbc783f SHA-256: 589c571736c807c758767835af91794b9a811052eb804dfd22508824f847469a
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, many pointing to PDF files, suggesting a link farm or SEO abuse tactic. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The embedded URLs and the document's structure suggest it's designed to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffine.ru/wb?keyword=ib%20biology%20textbook%20dbq%20answers PDF link annotation
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f93ca0b671e8.pdfIn PDF document text
    • https://bujibapi.weebly.com/uploads/1/3/4/3/134383234/jozez.pdfIn PDF document text
    • https://jodotabamusunew.weebly.com/uploads/1/3/4/4/134402052/2138727.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/gebijufojuvovo.pdfIn PDF document text
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/fdda8800ec8e962.pdfIn 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/5fc0748a-2f25-4d8c-a5ca-ab054937e759/geo_tracker_top_parts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1537288-516b-46d3-9cc6-930d336c98dd/purdue_epics_design_process.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8f25aa6f-79c7-49fb-831e-b3c0b48461cf/80562747050.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2329c6fa-90ea-45d1-a192-0b934d3ac77a/28074101462.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5693f07b-70bd-45c7-909e-6269c31da8b0/66089147869.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31af2dd3-7282-4431-980a-9187fc3380ee/bupibobuzobabirazanaperex.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA6AC 5524 bytes
SHA-256: 066d41e9a4403cff6f5e9b80637033d1d5af8d2ba0b720a589aa60301593b9c8
font_01_sfnt_off0000b993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB993 9868 bytes
SHA-256: 9110aa7da44677129abf432296a0ef29a8cc1bd0c39c0747cad573288bd188df

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