Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b715f481efd5668…

MALICIOUS

PDF

81.5 KB Created: 2021-02-19 15:53:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 2c4c6e86e37d8fbf517567d438a34b01 SHA-1: 2f8f997373e982fd86ce4e601d438a32b76a0baa SHA-256: 1b715f481efd5668540eb3cffa46f0bed4f25b0a03a7cf4cd18584b40f7ad0c5
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing attempt. It contains an external URI pointing to a suspicious domain, likely intended to host a malicious payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains keywords related to Cisco IP phones, suggesting a lure to trick users into clicking the malicious link.

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://jottigo.ru/strik?utm_term=cisco+ip+phone+303+forward+calls PDF link annotation
    • https://fawitazekivaji.weebly.com/uploads/1/3/1/4/131454143/kezamokejokigegeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459062/normal_5ff1952d00505.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450428/normal_5ff117fd95e9c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455195/normal_5fcdf86a07a2e.pdfIn PDF document text
    • http://firstreadersclub.com/android_close_app_in_backgroundvtjek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413125/normal_5fd0da1b00fce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388040/normal_602b0db99d874.pdfIn PDF document text
    • http://you-bestshop.xyz/munibomaxuloledusomerl8lg1.pdfIn PDF document text
    • http://adyga.site/zupisijolqh6n.pdfIn PDF document text
    • https://serawododi.weebly.com/uploads/1/3/4/8/134885696/1668136.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461219/normal_6005fcb3dac56.pdfIn PDF document text
    • https://bisifivu.weebly.com/uploads/1/3/4/7/134724717/3637225.pdfIn PDF document text
    • https://tilijaxak.weebly.com/uploads/1/3/1/3/131381787/546082.pdfIn PDF document text
    • http://003-center.ru/bostitch_vertical_battery_pencil_sharpener_manual47wgw.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/vavejijitatofu/bncc_atualizada_resumida.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/balgandharva_full_movie_utorrent.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/bhiwandi_weather_report_today.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/7349809276.pdfIn PDF document text
    • https://s3.amazonaws.com/debiwelof/aditivo_diesel_performance_peugeot.pdfIn PDF document text
    • http://���domain���.onjive.com/p/$MAIn 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_off0000fd7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7F 5544 bytes
SHA-256: fa12a1052bdefec4a6c8b65a11c42dfca7d2a97c96a57fe8ea72e6c7a8963053
font_01_sfnt_off00011067.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11067 11272 bytes
SHA-256: 1effa71d2100c14037c64276a888269eebfc9b00ea0e840176cd6c5a55efac29

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