Malicious PDF — malware analysis report

Static analysis result for SHA-256 83c71477eff188fa…

MALICIOUS

PDF

86.5 KB Created: 2020-12-14 18:24:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 36b1b02effb4a32399277a9fc17420f0 SHA-1: 91f96dfed7379552e92af89f90ae9feaa5b5f43a SHA-256: 83c71477eff188faf9129038a5eb06a116799b9a408a3121bf4bfa37135faa92
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF with a high ML classification and ClamAV detection, indicating malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to the URL's apparent search query, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://traffset.ru/123?utm_term=best+mod+load+order+skyrim+xbox+one PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b7c8ea3-5eed-4d02-bb4d-f38088101802/matekazomibasomazev.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6fd3fcf-eb62-433d-a9e0-f2acf0a06030/jexifalu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50b35a96-c85d-4591-b363-e09313fbcf59/tc2000_for_mac.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e694eefa-1071-4fc1-81c0-fc685f49f440/hp_1606_drivers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2e8cb2bbd74065813b48b/t/5fc41c233c6ccf69f3dfe0a9/1606687780971/introduction_to_plasma_physics_and_controlled_fusion_solution_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/817622c9-62f5-4038-a41b-d20fef22382e/xakamamekefosiwupodiberix.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe196d1972c46e3c677300/1606293870077/29727559752.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e80068612547ed5e2b99/t/5fc2816d145a8629dc01c6fd/1606582637452/93361733744.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08903f36-aef4-4506-a3be-03c72cd081c6/science_industry_and_business_library_new_york_ny_10016.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc18c699698b02c7f25315b/t/5fcefceb10aae77571663751/1607400690644/lumajejiko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2230872d-9285-4c25-bd35-f6e2b24bdfef/samedufivowimadememum.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55117f9866f3fd2f13377/t/5fd6818dab1a676c7293375d/1607893393034/vukimujobofijat.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/bella_popcorn_maker_manual.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 2

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_off0001119e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1119E 5396 bytes
SHA-256: 85902942351bac17820d597efef809414f191ff127732f419a9f9286bdbad022
font_01_sfnt_off000123e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123E6 11568 bytes
SHA-256: 1e43ae72cd208ced03e2cadcc358eb7d6d3216a89d0a9424364269655fdc7c7c

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