Malicious PDF — malware analysis report

Static analysis result for SHA-256 776402a7e2d517cb…

MALICIOUS

PDF

62.4 KB Created: 2020-11-25 10:36:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 60e49af090e8d96ec73571f0d5f8e770 SHA-1: ca27e9b108b7be1b3f7f5cd2421b3332241a5da6 SHA-256: 776402a7e2d517cbd6fa3e53236fb4ac70a6bf152998eacfe8092af33bce39f7
154 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 ML classifier and ClamAV, and contains a critical heuristic indicating a link to known malicious redirector infrastructure. The embedded URL, 'https://traffmen.ru/strik?utm_term=panasonic+model+kx-tg9341t+user+guide', is the primary indicator of malicious intent, likely serving as a lure for phishing or to download further malicious content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://traffmen.ru/strik?utm_term=panasonic+model+kx-tg9341t+user+guide In PDF document text
    • https://wizawexixif.weebly.com/uploads/1/3/4/4/134472694/5656c60b8.pdfIn PDF document text
    • https://pujazoja.weebly.com/uploads/1/3/4/8/134880569/25914cd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d43152fb-cb62-459d-a1f6-bf505376dd88/earth_taken_unblocked.pdfIn PDF document text
    • https://s3.amazonaws.com/fujadabez/semerepegizonegoruxibevid.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/united_nations_yemen_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/99481505938.pdfIn PDF document text
    • https://s3.amazonaws.com/tuletivotarupu/yahoo_password_finder_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d0ae300-bb37-4000-b6ea-63bbd1cfb4ea/epidemiologist_education_years_needed.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d5962ac-9dfd-4b49-b5a1-aa8b039b3115/gefadupapadenuguzemiwa.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/27408273587.pdfIn PDF document text
    • https://s3.amazonaws.com/fosalizuzu/56504469707.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/source_of_information_about_indian_mission_abroad.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_off0000b41d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB41D 5884 bytes
SHA-256: d4c53786d9af52528f1e16860efb1f92a4520b2fd2bf251c291d153ad088c731
font_01_sfnt_off0000c821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC821 10612 bytes
SHA-256: 59dad504a8166849c6e8b55e5c26259417ec83d3862dd780a5ff5be9f123222a

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