Malicious PDF — malware analysis report

Static analysis result for SHA-256 a248b44e2ecc4fa5…

MALICIOUS

PDF

90.9 KB Created: 2021-05-18 15:03:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: e17752fac03dc9368d323d3bb154bb2c SHA-1: 49309a5a2563c91ac6a45b1e1d036d5b9b1b5b7b SHA-256: a248b44e2ecc4fa57051d92b63c32b942fb487784061ee530309b1681406c2ec
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL `https://mezovuduw.ru/strik?utm_term=how+do+i+fix+e6+error+in+gree+ac` is the primary indicator of a phishing or malware distribution attempt. Although the document body is heavily obfuscated, the presence of a suspicious URL and the overall verdict strongly suggest a phishing lure.

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://mezovuduw.ru/strik?utm_term=how+do+i+fix+e6+error+in+gree+ac PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450424/normal_6043c12629d1a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470017/normal_5fe2ebcb5eb9a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xekubot.epizy.com/food_vocabulary_exercises_intermediate.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/google_contacts_import_csv_template.pdfIn PDF document text
    • http://gukasitaxe.epizy.com/fluency_rate_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/74275101284.pdfIn PDF document text
    • http://zaxilofekuji.epizy.com/dikado.pdfIn PDF document text
    • http://fixokofo.rf.gd/81151333468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6a81f3f-87e2-43a1-89e9-86605379bf1b/epson_surecolor_sc-p8000_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/05390c59-e9ea-465b-82fc-050aa29b90b2/motexega.pdfIn PDF document text
    • http://fapadosijavo.epizy.com/fubut.pdfIn PDF document text
    • http://ramozan.epizy.com/8031173233.pdfIn PDF document text
    • http://vutagefen.epizy.com/asus_rt-ac68u_review_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/63267238298.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/629768a8-25da-4ef7-879c-00ba1b8283e7/dd_5e_archfey_warlock_patrons.pdfIn PDF document text
    • http://perabojon.rf.gd/58666066615.pdfIn PDF document text
    • https://s3.amazonaws.com/daselex/jexovuvaxaf.pdfIn PDF document text
    • http://rileponabamel.rf.gd/abandon_ship_subnautica.pdfIn PDF document text
    • https://s3.amazonaws.com/mujevubutukoxu/dependent_prepositions_quiz.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_off000124a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x124A9 5252 bytes
SHA-256: eefb833673ef90c644b56675b61eab33ecdf4b1ab826d5ab774e230525c22f66
font_01_sfnt_off000136b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x136B2 11636 bytes
SHA-256: b4f5332e4a3440f5301987b013738e406f1c95e8566f6e2d072787f7bd288174

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