Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b5eff472e621791…

MALICIOUS

PDF

107.2 KB Created: 2021-04-28 09:11:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bd4ba67525bd8706f58b7bcb8be2a9fd SHA-1: eb273079722a21070f719d43b7f67fcd595022c2 SHA-256: 5b5eff472e62179108081b4f2ec1e80a0a8561b4dc65b685aaeae5f465e72de1
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 high likelihood of malicious intent. It contains an embedded URL that directs users to a site disguised as a book series, likely a phishing or malware distribution lure. No scripts were extracted, but the presence of external URIs suggests the document's primary function is to redirect the user to a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://lozipotod.ru/strik?utm_term=gone+the+complete+series+michael+grant PDF link annotation
    • http://auth02mobility.com/deliwotexouwhua.pdfIn PDF document text
    • http://blancer.xyz/college_algebra_help_solving_problemsya3qr.pdfIn PDF document text
    • http://zaparipajomigi.scienceontheweb.net/microplastics_in_water_and_wastewater.pdfIn PDF document text
    • https://cdn.sqhk.co/zofizitene/NR8DUhi/logo_quiz_answers_level_75.pdfIn PDF document text
    • https://cdn.sqhk.co/vizejagojib/LgiSiiO/57259251137.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/jiidiam/wiwapem.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/pewebopufupe/43292600437.pdfIn PDF document text
    • http://rapevuf.epizy.com/employment_equity_plan_template_south_africa.pdfIn PDF document text
    • http://limoxukuk.atwebpages.com/sosixanamojig.pdfIn PDF document text
    • https://s3.amazonaws.com/sizabo/21393568263.pdfIn PDF document text
    • https://s3.amazonaws.com/bubeto/31557288055.pdfIn PDF document text
    • http://baxujaxifibew.rf.gd/gunizubofupupulizugukox.pdfIn PDF document text
    • https://s3.amazonaws.com/webipejonavuv/tusowezojofomebupisometo.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/housatonic_river_fishing_report.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_off000167c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167C7 5376 bytes
SHA-256: 3746f9c58cff36e1ddc632900ef3cee778de3c861a8d93e4e4ce697860fe348a
font_01_sfnt_off000179eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x179EB 11196 bytes
SHA-256: d8056080869d8356935f4ee4195cc3127c98a79ca7b426c598dfc0148a06a3f3

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