Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0962c964a6b5445…

MALICIOUS

PDF

71.1 KB Created: 2021-02-08 05:00:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c63b6c5b448644ae85d41c26eadb0572 SHA-1: d486b432231a3e8a92d5b463f968ad12c33c006d SHA-256: c0962c964a6b5445143093553b6a1bed45f0c60630e53000cf11a1e8769e82c5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, specifically identified as 'Pdf.Phishing.Trojan'. It contains an embedded URL pointing to 'https://jottigo.ru/123?utm_term=chemistry+unit+3+worksheet+2+answers', suggesting a phishing or credential harvesting attempt disguised as educational material. The document body, though heavily obfuscated, contains text related to 'Chemistry unit 3 worksheet 2 answers', reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://jottigo.ru/123?utm_term=chemistry+unit+3+worksheet+2+answers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4495391/normal_5fda113275176.pdfIn PDF document text
    • http://bawikivogo.22web.org/adhir_man_zale_song_bestwap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416319/normal_60202ec34780c.pdfIn PDF document text
    • http://bogaxusamukuxid.22web.org/fukunuvetovefuzaleno.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403428/normal_5ffc255d33832.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390329/normal_5fc64a27a4ed9.pdfIn PDF document text
    • http://bejuzoz.iblogger.org/32522676062.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413347/normal_600b6a3da2391.pdfIn PDF document text
    • https://cdn.sqhk.co/sejejajoxej/jjgeji8/nascar_race_sunday_night.pdfIn PDF document text
    • https://cdn.sqhk.co/vujejanar/VTwVihQ/tizabugubasobid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jojanotesejivi.epizy.com/garidarerugu.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/vesanijusifanoj.pdfIn PDF document text
    • https://s3.amazonaws.com/kukazowox/33138670214.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/15285532254.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/30171015415.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/dead_space_extraction_pc_free.pdfIn PDF document text
    • http://mupisogedosido.epizy.com/aurelia_metals_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/mtg_goblin_guide_playmat.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC318 5352 bytes
SHA-256: 11397490f198d74d47cdfeedacc751a347146816f7b04ccb1ef43113fd5bb9fa
font_01_sfnt_off0000d52d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52D 10712 bytes
SHA-256: cd1d2b2341c03386590e37a20d8cd94e48a53d903c610705d85d00de18e1eb62
font_02_sfnt_off0000f9d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9D4 16136 bytes
SHA-256: 043be0776a30beff310ba57abfbd428576305065390232ed26ad0cfb0a25ec8b

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