Malicious PDF — malware analysis report

Static analysis result for SHA-256 45c0d32ab9362265…

MALICIOUS

PDF

74.9 KB Created: 2021-02-17 15:12:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 3e1527f473aab84ba58602a1aea0046d SHA-1: 2b7cc622a177d4c79bf8db3003d41096dbd841da SHA-256: 45c0d32ab93622651b4dbc0467a9fd91f386b91d5cdacccdf66998a711beb140
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to suspicious or unknown domains, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier further support its malicious nature. While no scripts were explicitly extracted, the presence of embedded URLs and the PDF structure suggest an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=maze+runner+1+wiki In PDF document text
    • https://cdn-cms.f-static.net/uploads/4482206/normal_6019cdcb2fccc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490116/normal_6021aba3674fc.pdfIn PDF document text
    • http://myfirstsite.xyz/37229543254victa.pdfIn PDF document text
    • https://xofajusas.weebly.com/uploads/1/3/1/0/131069744/bb6d40e39.pdfIn PDF document text
    • https://nezivubu.weebly.com/uploads/1/3/1/3/131384481/8a5975d1381565.pdfIn PDF document text
    • https://rijevolokawuja.weebly.com/uploads/1/3/4/6/134661742/fd3995.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381344/normal_601b2a0d3259b.pdfIn PDF document text
    • https://japekubejur.weebly.com/uploads/1/3/0/7/130775222/zuvimonofivukibovopo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500425/normal_602a1f6249347.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/kaxukok/revevubulodopifevajunod.pdfIn PDF document text
    • https://s3.amazonaws.com/dobesogum/academic_poster_template_powerpoint_a2.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/template_free_wordpress.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/linez.pdfIn PDF document text
    • https://s3.amazonaws.com/dadupawo/tubosemofulep.pdfIn PDF document text
    • https://s3.amazonaws.com/tugabijenovili/tujaxarisepinutalir.pdfIn PDF document text
    • https://s3.amazonaws.com/xaliwalufoguni/windows_defender_security_center.pdfIn PDF document text
    • https://s3.amazonaws.com/megodipewukitoj/alif_episode_2_free.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/vixolurudezif.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_off0000e8f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8F0 4732 bytes
SHA-256: 03639d28d84a063e7d9347ab0f4816dad70b6ba7ec62238757ab552e2eaa34d9
font_01_sfnt_off0000f944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF944 11024 bytes
SHA-256: 778c9d82daf5adf64456dd25ede16e4a93d766e89eacb5834e7aab370f0d4143

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