Malicious PDF — malware analysis report

Static analysis result for SHA-256 222f66dc73e3c4d0…

MALICIOUS

PDF

135.9 KB Created: 2021-03-14 07:27:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d0286de4a345ed3245791b84190f0c39 SHA-1: b5a099d9aea958e67eff28ff02b872674d9ac851 SHA-256: 222f66dc73e3c4d0d966e1b99a13074cb48f3315d1fae096eef98f68cc4a930c
156 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. One prominent URL, https://botokaw.ru/wix?keyword=adventure+quest+warrior+builds, is directly associated with the file. ClamAV detection as Pdf.Phishing.Trojan indicates a malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=adventure+quest+warrior+builds
    • https://static.s123-cdn-static.com/uploads/4454055/normal_5ffb3ffd90617.pdf
    • https://jurefuzosapob.weebly.com/uploads/1/3/4/9/134901670/7419382.pdf
    • https://static.s123-cdn-static.com/uploads/4427780/normal_5fdd43f142023.pdf
    • https://rakurewirusemew.weebly.com/uploads/1/3/4/0/134017151/322879.pdf
    • https://static.s123-cdn-static.com/uploads/4465555/normal_5fc951931a523.pdf
    • https://static.s123-cdn-static.com/uploads/4393521/normal_5ff2270f0de83.pdf
    • https://temazojirilezin.weebly.com/uploads/1/3/2/3/132302863/9639476.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tikofaketonub/state_ceqa_guidelines_15301.pdf
    • https://uploads.strikinglycdn.com/files/39d17073-78d4-459d-bad2-068e12560b24/73013246979.pdf
    • https://6eed613e-cbae-405e-b458-9655ef9033f8.filesusr.com/ugd/e4f6f0_34df1c278ded4163999e6091739654e5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/bab7f58c-356e-498d-b740-8a1b7e4705b7/loxakoderatejuxaluvofolas.pdf
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_bb79c59bd8aa409ea6eaec6df153bd82.pdf?index=true
    • https://uploads.strikinglycdn.com/files/24f8ef10-5fd2-4ed9-a807-04f88c4c3024/john_deere_214_service_manual.pdf
    • https://s3.amazonaws.com/gowupuzokowuxes/what_are_social_science_research.pdf
    • https://s3.amazonaws.com/lupebesu/bollywood_movies_new_2017.pdf
    • https://uploads.strikinglycdn.com/files/06d16424-a7d6-4d94-b7df-012c9f021d80/the_art_of_racing_in_the_rain_chapter_23_summary.pdf
    • https://uploads.strikinglycdn.com/files/d10550a2-e2bc-4710-9fe0-5f5f266ae432/how_to_keep_washer_from_smelling.pdf
    • https://uploads.strikinglycdn.com/files/59118230-43e1-4d2e-af59-185662dd4a57/44079235177.pdf
    • https://uploads.strikinglycdn.com/files/03365a23-4498-4de0-b67f-a40b86d784d2/bowixobuwobudu.pdf
    • https://uploads.strikinglycdn.com/files/a2389575-508e-4541-9cab-e6e28152c05c/holy_quran_recitation_with_urdu_translation_video_free_download.pdf
    • https://uploads.strikinglycdn.com/files/5d1dd643-9bc4-4ba2-a4d1-7d09ad1d03fc/gedula.pdf
    • https://uploads.strikinglycdn.com/files/48d4d397-b257-463f-bc88-06e7e7ce7722/kenmore_washer_troubleshooting_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001d73a.bin
5bcce8c0c7ffb6163ead715bec97cd1b5fa688e50f43d3c3258cb76392911106		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1D73A 5224 bytes
font_01_sfnt_off0001e916.bin
8f8746e5202e4fbe772ee406369b9d9c23f8e7cdc0e2eda4497c26616e7e72c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1E916 11740 bytes

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