Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cbbbb0078f8d006…

MALICIOUS

PDF

96.7 KB Created: 2021-02-17 20:34:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9410700999ea6f89022f2042bcefbad0 SHA-1: 25643681cdb8d434778cced821f2fd52e7a0df4f SHA-256: 7cbbbb0078f8d00612cefba071d17d4a429161f512489748dee214d086d65376
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains a large number of embedded links, many of which point to known malicious redirector infrastructure or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document body, though heavily obfuscated, appears to contain keywords related to government licensing, suggesting a lure to trick users into clicking the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/strik?utm_term=washington+state+department+of+licensing+health+professions In PDF document text
    • https://static.s123-cdn-static.com/uploads/4481418/normal_60058e5741f00.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462974/normal_60253cffe1720.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420034/normal_5fed363fa31a1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5fe00b392802e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414164/normal_5fd943f37f26d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4492918/normal_5fed6e63d62a4.pdfIn PDF document text
    • https://gazumewus.weebly.com/uploads/1/3/4/9/134901575/e8e097ff941.pdfIn PDF document text
    • https://xizuxikeg.weebly.com/uploads/1/3/0/7/130740292/9225947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486200/normal_5fd6ad042bf92.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415937/normal_5ff5cc9c7fc04.pdfIn PDF document text
    • https://jikumuwalomaj.weebly.com/uploads/1/3/1/3/131383204/tizorimu.pdfIn PDF document text
    • http://sagokorize.22web.org/sudonesujururediteninofe.pdfIn PDF document text
    • https://wutupebepa.weebly.com/uploads/1/3/3/9/133997315/mepazavagogapos-gesotobu.pdfIn PDF document text
    • https://foxevavudutis.weebly.com/uploads/1/3/4/3/134380199/nowopabir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407552/normal_6014052a79373.pdfIn PDF document text
    • https://givurili.weebly.com/uploads/1/3/4/6/134605008/rizirikatis-bozap.pdfIn PDF document text
    • https://jojobejuw.weebly.com/uploads/1/3/2/8/132815094/badikidum.pdfIn PDF document text
    • https://rofewure.weebly.com/uploads/1/3/3/9/133999154/1b978.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jonilobasi.epizy.com/se7en_keynote_template_free.pdfIn PDF document text
    • http://zumoxevozasumek.epizy.com/66118394751.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_off00013a76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A76 5580 bytes
SHA-256: 0256ed6bfc1b5f2238c4bed24c571521a7f0e01988a74475d10fdb026bb71a9c
font_01_sfnt_off00014d59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D59 11624 bytes
SHA-256: 55d1f8ab075b36dcb9650cb26bd24b5366e0d03a67c6e57ddd51bc9b1cb792fe

Open this report in the interactive analyzer, or submit your own file for analysis.