Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d64510a2565ada…

MALICIOUS

PDF

78.7 KB Created: 2021-02-28 11:47:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: f334feea3db222fd842312ea7f39467c SHA-1: 32f034e714e393d6b8362595cc2a6f0713c9038e SHA-256: e1d64510a2565adaf533847cf713bb49be6638fa80057a727fe5503216f8e88c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a high probability of malicious intent. It contains an embedded URL that leads to a suspicious domain, likely serving as a lure for phishing or malware distribution. The document body, though partially corrupted, suggests a social engineering pretext related to a literary summary.

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://maypoin.ru/strik?utm_term=much+ado+about+nothing+summary+act+1 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409604/normal_5fd184f65dbc7.pdfIn PDF document text
    • http://dekoratifazanu.22web.org/manabosegawaful.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444110/normal_5fee2fa03fa4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390664/normal_6036306aa30ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450036/normal_5fe6ea3ed3d72.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403681/normal_5fcdfa19a29d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420034/normal_60223083ce078.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421339/normal_5ffbe2cacd86c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421612/normal_5ffacbae4492e.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/fopalew/91456717731.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/47720054343.pdfIn PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/wonap.pdfIn PDF document text
    • http://riramemixezu.epizy.com/31731507752.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/formal_dresses_plus_size_long.pdfIn PDF document text
    • http://tinijev.epizy.com/govig.pdfIn PDF document text
    • http://nagajawonusagu.epizy.com/xobumit.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_off0000f7b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7B9 5620 bytes
SHA-256: 558a88d254893e7f2b0dd849d9ec04b455b15dffee9066f10c214a484606a616
font_01_sfnt_off00010ac1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AC1 10196 bytes
SHA-256: df4eca97b97bf982dba5fbc30370f52002ea160dfab86c27f64889957f00209e

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