Malicious PDF — malware analysis report

Static analysis result for SHA-256 a22d32a433356e59…

MALICIOUS

PDF

69.4 KB Created: 2021-02-19 01:01:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0629b0b8925cd2b7437f450da2e0b7ba SHA-1: ee3de7429b06e80cffbf998b7c68dac2fd508019 SHA-256: a22d32a433356e59c81f6a5efa1e9e4729abe699618881d232a91734b44f59d8
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, likely as part of a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were directly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site.

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://seumenha.ru/wix?keyword=ancc+purple+book+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391605/normal_6026d803b36d4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369653/normal_5ffa3f992e58b.pdfIn PDF document text
    • http://2220202.ru/how_to_renew_drivers_permit_nyfi3ql.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383475/normal_5fd396780a1d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371514/normal_6024a23c7904e.pdfIn PDF document text
    • http://topmassage.net/journey_to_the_west_full_movie_download_in_tamil_dubbed0l459.pdfIn PDF document text
    • http://xtw2.club/aircare_humidifier_manual_ma1201ma5ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_601765978c834.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378848/normal_5fed9240b1f95.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/jezekemunidup/setakufedobidoxiwagew.pdfIn PDF document text
    • https://s3.amazonaws.com/zukogi/wipezomomuji.pdfIn PDF document text
    • http://tupemovon.rf.gd/dexizebisasirubalube.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/rizuvemeg.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/dungeons_and_dragons_character_sheet_filled_out.pdfIn PDF document text
    • http://selawed.rf.gd/free_guided_walking_tours_europe.pdfIn PDF document text
    • https://s3.amazonaws.com/gixawetopoli/mugawi.pdfIn PDF document text
    • http://tubaduk.epizy.com/advanced_rest_client_mac.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_off0000d342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD342 4956 bytes
SHA-256: bad76e2f18b006883cca98a383cd12c65251f7e372625d4afa8e8917fc584150
font_01_sfnt_off0000e42e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE42E 10396 bytes
SHA-256: 882442110875f798279c2dc906527a6182827b413d7b17267039dfd69b835163

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