Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbbdc375dc052ba4…

MALICIOUS

PDF

76.9 KB Created: 2021-03-24 04:00:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 33472e10308be2d6d247378017ae0bf3 SHA-1: 97ef9e561cd565ff6182696149386d0011cfa880 SHA-256: cbbdc375dc052ba4e8f35b6a6c3769113d7e9fd92fe5d1f4919b2010fad30e64
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains a URL that mimics a search query, likely intended to trick the user into visiting a malicious site. No scripts were extracted, but the presence of external URIs suggests a download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://soxebez.ru/aws?utm_term=little+house+on+the+prairie+season+2+episode+11+cast
    • https://zekaxuwamawebi.weebly.com/uploads/1/3/5/9/135961115/9578418.pdf
    • https://wujipiledulom.weebly.com/uploads/1/3/4/6/134695719/luzoxivifoze_xivozidugenegi_xemorenu.pdf
    • http://vudatibapikapak.22web.org/64618321331.pdf
    • https://xalemewo.weebly.com/uploads/1/3/4/6/134665704/03e8fbb42d15a.pdf
    • http://sofoviwov.iblogger.org/55967431418.pdf
    • http://fuluwube.22web.org/botivuxek.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/gezejoputiwinu/jiwivulejalageseren.pdf
    • http://sigukelebejewir.epizy.com/93425453243.pdf
    • http://temimepizunosaf.epizy.com/richmond_electric_hot_water_heater_reviews.pdf
    • http://dopuviboxew.rf.gd/xofewowetomabizos.pdf
    • http://vapojolojumow.rf.gd/kivugeviwib.pdf
    • https://s3.amazonaws.com/zexozavo/88169923142.pdf
    • http://xamojaxul.epizy.com/word_problems_multiplication_5th_grade.pdf
    • https://s3.amazonaws.com/tibanepoxilibud/android_version_7_game.pdf
    • http://pixudavevenute.rf.gd/alkaline_vegan_cookbook.pdf
    • https://s3.amazonaws.com/tarajix/competitive_bidding_definition.pdf
    • http://pakilapawunafep.epizy.com/mergers_and_inquisitions_cover_letter_template.pdf
    • http://gejebegujisutil.rf.gd/jitomarugifevesanekudem.pdf
    • https://s3.amazonaws.com/baxegezivumi/how_to_set_aside_a_default_judgment_in_florida.pdf
    • http://vekifaxofezawe.epizy.com/tactics_for_toeic_answer_key.pdf
    • https://s3.amazonaws.com/nojemi/tevolunebezekasigufuwu.pdf
    • https://s3.amazonaws.com/lorerexeg/pugiravexa.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_off0000ecdd.bin
9526c14e4824424687144d14ed41092792ea4872bf97892ba7fc3d792cbca555		 pdf-font-stream PDF embedded font (sfnt) at offset 0xECDD 5288 bytes
font_01_sfnt_off0000fed1.bin
9dd6a91cfd48dbd7003d611367f8f5ea8e60a506d317dd16b7819f24010a2e96		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFED1 10944 bytes

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