Malicious PDF — malware analysis report

Static analysis result for SHA-256 faa46333868d537b…

MALICIOUS

PDF

76.8 KB Created: 2021-02-13 23:00:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 7fd434060a87d0fd63720eb33e05aeea SHA-1: e79c91cfedbeda0b52ae7c79ba1c3813ff809a6d SHA-256: faa46333868d537bb4a273da21e8cdafa2b27de87ec8958d57a8287af5358dde
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'https://jacksth.ru/wix?keyword=teoria+del+color+marketing', which is likely part of a phishing or social engineering attempt. The document body, though heavily obfuscated, suggests a theme related to marketing and color theory, likely a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/wix?keyword=teoria+del+color+marketing PDF link annotation
    • http://winoraama.fun/wupidumoc2suy.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367912/normal_5fe5c2962bcf7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380522/normal_5ff71199af353.pdfIn PDF document text
    • http://vezdesami.ru/gitlab_documentation_style_guidepqb15.pdfIn PDF document text
    • http://circus.market/kafesigezopodajusopzz2n2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491450/normal_5fe74d9b62215.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419452/normal_5fe24c3d566c8.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/verirejon/xitusamadiriraxigiwuz.pdfIn PDF document text
    • https://s3.amazonaws.com/mudurixo/82931086316.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/apnealink_air_software_v10._2.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/morasirekokele.pdfIn PDF document text
    • https://s3.amazonaws.com/jexijer/hodder_cambridge_primary_english_stage_4_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jajuzasalikirut/kabootar_bazi_song_punjabi.pdfIn PDF document text
    • https://s3.amazonaws.com/jazofi/bopomenosisefefasifolamiv.pdfIn PDF document text
    • http://foboganezebalo.rf.gd/glassworks_opening_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/akpe_na_wo_celestine_donkor.pdfIn PDF document text
    • https://s3.amazonaws.com/buganabowumujef/lodivilidokenofa.pdfIn PDF document text
    • https://s3.amazonaws.com/jajoxulabojaso/zivise.pdfIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/football_score_sheet_template.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_off0000f143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF143 5096 bytes
SHA-256: b1df7b73267d5dbd365f9e41319f6444e23800399a112eb2f4ab38cd516c3de4
font_01_sfnt_off00010281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10281 10400 bytes
SHA-256: 67df7c2c96fcc799bb435a00de2026377a4d8d8601701bbc0a28c7828ba3c968

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