Malicious PDF — malware analysis report

Static analysis result for SHA-256 1928f95f47c5bae6…

MALICIOUS

PDF

80.2 KB Created: 2021-03-14 13:33:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 02409de3c28ed91d7cf4db37cd246977 SHA-1: c3e5ac9da9dd1afc06e450130a5ca2a2e314faf3 SHA-256: 1928f95f47c5bae61b0b1e289631eae05e6eb305da2b6f74ce3b187bd31454d4
96 Risk Score

Malware Insights

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

The file was identified as malicious by ML classifiers and ClamAV, with a specific ClamAV detection name indicating it is a phishing trojan. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. No scripts were extracted, but the presence of an external URI strongly suggests a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 4

  • 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://nipisod.ru/wix?keyword=sac+fungi+reproduction PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4475992/normal_5fc63a097d000.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388412/normal_5fc78af7d2506.pdfIn PDF document text
    • http://xexapitanegis.getenjoyment.net/percy_jackson_movie_1_actors.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393197/normal_6028fde14c6e3.pdfIn PDF document text
    • http://dalosizofovabes.medianewsonline.com/shadow_work_questions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489404/normal_5fd2fb2e3b49e.pdfIn PDF document text
    • http://jijufik.22web.org/debating_structure_template.pdfIn PDF document text
    • http://bukuxojunuz.mypressonline.com/58354636176.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402294/normal_604642edcc679.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/wixanarer/tapujari.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/overcoming_gravity_2_progression_charts.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/juwodajedibaxijizi.pdfIn PDF document text
    • http://bitobow.epizy.com/is_it_okay_to_pour_concrete_in_cold_weather.pdfIn PDF document text
    • http://mabiwariw.epizy.com/37969781975.pdfIn PDF document text
    • https://s3.amazonaws.com/xoferuzu/tinumuvomejugimoj.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/46254510094.pdfIn PDF document text
    • http://losalevova.epizy.com/21665371676.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/jcp_l_report_outage_phone_number.pdfIn PDF document text
    • http://fadudenomo.onlinewebshop.net/prevention_of_diabetes_mellitus.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/jakakisirexulu.pdfIn PDF document text
    • http://defakulid.atwebpages.com/career_assessment_questionnaire.pdfIn PDF document text
    • http://lodumojokexiku.onlinewebshop.net/boritifimemokigusas.pdfIn PDF document text
    • http://kovudefimure.rf.gd/zegenuz.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_off0000fe2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE2C 5216 bytes
SHA-256: 43897b93d8de2394b977b4b26188930dbb948850356bdfbd17a5544ef5ede12b
font_01_sfnt_off00010ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FFC 10712 bytes
SHA-256: 2cb1545d41cdab3d664c1c35c4658f49d49bdd6e1f7d520af5b6cce318921a79

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