Malicious PDF — malware analysis report

Static analysis result for SHA-256 503c6a6ef73815e7…

MALICIOUS

PDF

66.5 KB Created: 2020-12-16 21:04:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 1b700d2784267a323e9c51e698e5e151 SHA-1: 1840f8df4bf1e3042bc8fdab06f9ba8eb7085fb3 SHA-256: 503c6a6ef73815e75a14cdb914e73ce1dbf2ff0bf1f4c190a4bb808cd8174924
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to a book summary, directing the user to a suspicious URL. ML and ClamAV heuristics confirm its malicious nature, classifying it as a phishing or trojan PDF. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect users to a malicious site, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/strik?utm_term=el+viaje+de+su+vida+summary+chapter+1 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448746/normal_5fcd381e1c787.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485014/normal_5faa3a24c756e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380890/normal_5f96c3e7171dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc12ec9f7cf8c75402cc175/t/5fc4353b3c6ccf69f3e44527/1606694204483/sodastream_black_friday_canadian_tire.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5720fc6229360eccb86af/t/5fd73530e5ac5828963c8265/1607939377389/93514336342.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf50762dd96f5918e54b5d/1606373510996/joy_luck_club_sparknotes_chapter_1.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58f90b8467722f1f3741f/t/5fcf34891901dd4d2ecfa69d/1607414922026/knife_sharpener_amazon_australia.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfff689955c744b536924c/t/5fc42b243f75b1664357e1cb/1606691622697/kenmore_gas_range_owners_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc706dc8651a04751958791/t/5fcdc570eb18547f4ba43f30/1607320944920/jorari.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/regifelilalilizub.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf78261e25426e1fe8be8/1606285187155/sarekomanulijetenezolavu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5811ae44-0330-42eb-86be-79a98032ae5b/perafo.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/epidemiology_study_analysis_practice_problems_answers.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_off0000c9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9D1 5560 bytes
SHA-256: d5c1e89cc52643fd1b5ca3b243dee928ef8928eb5e25e969a03d57ad4b56af3e
font_01_sfnt_off0000dcaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAA 10152 bytes
SHA-256: b6da532f19427266eb078fb78dd3845463ce2c9a45fc14d4bbf3a7e3e8a6d211

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