Malicious PDF — malware analysis report

Static analysis result for SHA-256 47d5e101caa95319…

MALICIOUS

PDF

77.0 KB Created: 2021-03-17 09:01:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: bfbf53094c3e235546c830d8a4892190 SHA-1: 5e3e72c371ee0e16669f3bd65723510f24ac13be SHA-256: 47d5e101caa953198777fecb42e4cf3884a8d8f51004efe5f02e43ac7e7e4be5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a large number of external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm. The document body is heavily obfuscated, but the presence of external links suggests an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • 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.
  • 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://pelibifir.ru/strik?utm_term=left+synonym+noun PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476941/normal_600f15e118797.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421787/normal_60206ffe0c67f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416512/normal_5fe9eb520130c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420587/normal_6027e66f4bb2c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://9c50f6df-e9c1-453e-a208-eff1cefe231f.filesusr.com/ugd/44b3dc_e88f74cbbe9747bcbe939f602411e8b6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaa5992e-dedf-4a9a-b23a-5528950347ca/35414280353.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/80859616066.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f5bf3ef-b68a-4df8-b95d-ea35680bcf0e/78291022081.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/clases_de_sistemas_operativos_y_sus_funciones.pdfIn PDF document text
    • https://e216d865-ddc7-438b-99b2-64609380b1bb.filesusr.com/ugd/7ae8b3_efda1b69e11b48fb90d5fb86f3b68a74.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/bamthathile_amapiano_remix.pdfIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_6bc3854efc9748029af553c562c193a2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/gasugevosobururev.pdfIn PDF document text
    • https://7afcd0b8-98df-42a4-afe0-9544d44c9539.filesusr.com/ugd/74e9cf_771fd25602a0462fa8d1b8c6c64b2bad.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jusagi/33426408944.pdfIn PDF document text
    • https://s3.amazonaws.com/davubewu/java_file_from_web.pdfIn PDF document text
    • https://s3.amazonaws.com/fedojigudaj/software_development_roadmap_template_excel.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/lebefaxuborigalip.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/temperature_monitoring_log_template.pdfIn PDF document text
    • https://s3.amazonaws.com/zesotat/62184745280.pdfIn PDF document text
    • https://58f604bd-1fd8-4cfe-af9b-f15e67d030d5.filesusr.com/ugd/9a7439_3620254260bb48c6b59bc88237c95cbf.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d9c1807-37ee-4d38-882d-1b5567e54a34/sopatitusadeji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4aa0fb3-9965-4d4b-bc06-016e17f5bf13/how_to_dress_for_a_day_of_the_dead_party.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa3d878d-ef5d-4695-a89d-731c71c80028/kivozugakunenanose.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/92030695755.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_off0000f3de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DE 4620 bytes
SHA-256: 1a36fddfa592445cd4d56433e5f98603a4a59b6070fbb13b43183b9ddc4d2443
font_01_sfnt_off00010398.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10398 10344 bytes
SHA-256: bcf8711b1c8d6e4a638fa08d13ffb28c5e08186ef174e44038caac8bf2cd6042

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