Malicious PDF — malware analysis report

Static analysis result for SHA-256 7855e8d2cc01b546…

MALICIOUS

PDF

60.4 KB Created: 2020-11-18 08:00:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 15aea1caa6874fc45dd611988f9242f7 SHA-1: 7ba43e6845dbbc60a7b84688da58e729bdf08d3f SHA-256: 7855e8d2cc01b54670b418ffbbc3ed52783889dab0c49af7dc5e0caa7aa93895
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a product manual, likely to trick users into clicking it. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=everstar+mpm-08cr-bb4+manual+pdf PDF link annotation
    • https://zoxamadafipezo.weebly.com/uploads/1/3/1/1/131164297/314fbbee6.pdfIn PDF document text
    • https://tiralilibixadu.weebly.com/uploads/1/3/4/5/134500138/914064.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409607/normal_5fa6f04f9ab03.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/muxesikirojube-wojisiwapafezi-perexu-lenatirim.pdfIn PDF document text
    • https://letalisukom.weebly.com/uploads/1/3/4/3/134316231/ritepaga_beketewotewu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384310/normal_5fa264077239f.pdfIn PDF document text
    • https://senamevab.weebly.com/uploads/1/3/4/6/134689233/fodajelejubitewonu.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/degerutisig/35828494692.pdfIn PDF document text
    • https://s3.amazonaws.com/jujojomojemiz/revapizafixojofutufepajo.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/x_wing_pilot_helmet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/44595836978.pdfIn PDF document text
    • https://s3.amazonaws.com/fowonaxul/lifonomumenoxosixizujamaz.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_off0000add8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADD8 5912 bytes
SHA-256: a0f923e6ac33dca9bdf4be27f39590a726de1ca6692f2b8e9bddd1cb45e48a4a
font_01_sfnt_off0000c1ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC1ED 10336 bytes
SHA-256: 197fbf9478a0a655740238414bf8ebc5f9c480473b8c2f796f04fabce0e3422b