Malicious PDF — malware analysis report

Static analysis result for SHA-256 57def89649009034…

MALICIOUS

PDF

73.0 KB Created: 2020-11-10 11:24:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3c042a4eae7932c7cadf906fdd31dda1 SHA-1: 8d71c31f71442d232e81baf49a404eb700aa3f30 SHA-256: 57def89649009034980e0395c5b2fb4db5ca6610954844b54db5d01c695e9536
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous external links, with one specifically mentioning 'crack full version adobe illustrator cc 2015', suggesting a phishing or malware distribution lure. The presence of a 'Password-protected archive handoff' heuristic and a 'Visual download / call-to-action button lure' further indicates an attempt to trick the user into downloading a malicious payload. ClamAV also detected this file as 'Pdf.Phishing.Trojan'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafffe.ru/123?keyword=crack+full+version+adobe+illustrator+cc+2015 PDF link annotation
    • https://devusabuzanuwuz.weebly.com/uploads/1/3/4/3/134352374/fitanogufoke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380084/normal_5f9f299156f05.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/cce824145ac41b7.pdfIn PDF document text
    • https://renibopasuviwi.weebly.com/uploads/1/3/4/3/134305424/add4de8.pdfIn PDF document text
    • https://vofutomafete.weebly.com/uploads/1/3/4/4/134463257/650783.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456671/normal_5fa08b12df159.pdfIn PDF document text
    • http://ssurll.com/10In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vavapekadoliti/movie_theater_rivertown_mall_grandville.pdfIn PDF document text
    • https://s3.amazonaws.com/dekogamik/78872327098.pdfIn PDF document text
    • https://s3.amazonaws.com/gumegulaxi/medicina_ayurvdica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e5aaefa-e898-4b99-92a1-8d4fc462fbe2/laxamo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64fafaad-0917-43c1-badb-2c88b0aedd86/tizidakubelijewamox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91557ecb-9bda-44d0-ba07-0e4e7aef3ab8/nonlinear_autoregressive_neural_network.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/physical_properties_of_bases_and_acids.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dca7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCA7 5632 bytes
SHA-256: da182f7047314f511c6cfcdafa6fb4cfdeeee2c36d3eb08621ca746a56430428
font_01_sfnt_off0000efeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFEB 11548 bytes
SHA-256: 058dfd475d892a5e49077f35e845455f7c3cd89b47e53d669c4d92c3bbfd086c

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