Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e70d8a0efd13be0…

MALICIOUS

PDF

73.8 KB Created: 2021-03-01 15:45:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 9ccb8815380ebb275e126f76a30da8c1 SHA-1: ddf96b70264684bd537df2a6b66bf928868eb2be SHA-256: 4e70d8a0efd13be00fb2c7248f5226b45ed983805101fde55e1b49065044bcc7
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://maypoin.ru/strik', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to website domain management, aiming to trick users into visiting the malicious URL.

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=how+to+add+web+domain+to+wix PDF link annotation
    • https://cdn.sqhk.co/mixaluwekitu/jbvMf1v/nobewatovu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381321/normal_5ff191b09ea11.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413016/normal_5fea3a0661c07.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494433/normal_5ff9df3aa4210.pdfIn PDF document text
    • https://cdn.sqhk.co/giwitosak/v17phjj/sales.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418565/normal_5fdff7068275d.pdfIn PDF document text
    • http://dibiwunineso.iblogger.org/taxewozilosidu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384632/normal_5fe66c554061d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393898/normal_5fcb2b3364fee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454682/normal_602dc569b2180.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/kosipefojaw/kathi_villain_bgm_ringtone_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/58876796766.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/14885356239.pdfIn PDF document text
    • https://s3.amazonaws.com/dewazewokib/wupexuxofepimusolubififaw.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/apologies_for_the_delay_in_answering.pdfIn PDF document text
    • http://zatajuvezutulo.rf.gd/mamofe.pdfIn PDF document text
    • http://numotuvafoja.epizy.com/paziz.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/27061915995.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/antigua_cricket_ground_weather_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_off0000e451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE451 4928 bytes
SHA-256: 6b069d75cda26ef02886451340888cddae023a54e406d3e42875c6bd4b0029ff
font_01_sfnt_off0000f517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF517 10852 bytes
SHA-256: 66b7a7ede19d8c5dd9c886057f73c2705fc024eff41fa603b2462c738c60daa4

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