Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b500d55d7a421ac…

MALICIOUS

PDF

69.6 KB Created: 2020-11-29 14:35:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4431def3a5a54f7721d63928d826528f SHA-1: 92e97c5748e16f9669058463aa16bb1c567e6b03 SHA-256: 7b500d55d7a421ac28805f503cc28d9ead92008c2573404835a43ede4fb27695
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://trafficel.ru/strik?utm_term=the+talented+mr+ripley+parents+guide PDF link annotation
    • https://taxamoxegira.weebly.com/uploads/1/3/4/8/134895948/rumotebokosofige.pdfIn PDF document text
    • https://xawazexeresav.weebly.com/uploads/1/3/4/5/134527443/piralimonajixa.pdfIn PDF document text
    • https://marepevu.weebly.com/uploads/1/3/4/3/134309524/9474290.pdfIn PDF document text
    • https://sujegido.weebly.com/uploads/1/3/4/6/134695044/f76ab2.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/072ce3ab-d2f5-4b44-9612-2e4022929103/repiwuzap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f6ceb7-2f8c-478e-9c51-2806e8324980/26442921504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e84434e9-65c5-4eb0-808b-a1a87caa217e/mosatixoguxafisubeg.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/sniper_assassin_2_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/module_2_borrowing_answer_key.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74b49a89-31b3-4493-8397-f607a82ac53d/mitosis_versus_meiosis_worksheet_17_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/zojabitawogixifaneja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03f5cd71-633d-4246-b501-e4cc8c2a6748/66832165424.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2038765d-d384-4628-9864-1dcf9a277793/256425765.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxuledo/kukejumukegukexali.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/54123670037.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/drift_hunters_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/traffic_accident_report_harbour_bridge.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_off0000d068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD068 5424 bytes
SHA-256: f615de71beb0c7bf07647efde6636040936d1f714e7adb08f799593918ab0764
font_01_sfnt_off0000e2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B5 10856 bytes
SHA-256: 938041e285494cb2b9d73c600a944ad3acba9ba9d03484ca67a8f14a1ca69c3f

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