Malicious PDF — malware analysis report

Static analysis result for SHA-256 45807fdab47656f0…

MALICIOUS

PDF

76.3 KB Created: 2021-02-06 01:27:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 25868fae8b07094c25654bacd41f6ae4 SHA-1: 64db8060115eb980983668df0710217b11212fbd SHA-256: 45807fdab47656f02b5a993d6a9fc3198c953c2a3f03844e5b1e4b2fb4c91a03
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ML classifiers and ClamAV as malicious. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body is heavily obfuscated, but the presence of embedded URLs and the overall detection suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=the%20air%20he%20breathes%20brittainy%20cherry%20pdf PDF link annotation
    • https://cdn.sqhk.co/wesaduleb/hhgcH80/national_geographic_shop_store_locator.pdfIn PDF document text
    • http://teagreen.space/45553882977uwhn4.pdfIn PDF document text
    • http://trokot-online.xyz/langrisser_hero_build_guidenr2wa.pdfIn PDF document text
    • http://antonioit.space/wuduroxesivoletuketusizrfo00.pdfIn PDF document text
    • http://nout-prodat.site/vibavijuweriwegibewikif71fn4.pdfIn PDF document text
    • http://vermono.site/borufuzavugijegozivafars5b.pdfIn PDF document text
    • http://gratoramaa.space/vefozefizajetelumuvoloxn5p8.pdfIn PDF document text
    • http://newberginvestmentproperty.com/dd_214_separation_code_lbk8e4mw.pdfIn PDF document text
    • http://byseles.xyz/modernidade_liquida_baumanzk14k.pdfIn PDF document text
    • http://fakts.design/rafokasux61g2o.pdfIn PDF document text
    • http://boldly-grow.com/63901393377s99dk.pdfIn PDF document text
    • http://bonifacy.site/bujilimegisidoxonamkwga4.pdfIn PDF document text
    • http://sdek-24.cc/avramis_river_indicator_freed1dq8.pdfIn PDF document text
    • http://halfraire.xyz/palme_biyoloji_9.snf_fen_lisesi_soru_bankasz3lo4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bokofapig/jiditivigepis.pdfIn PDF document text
    • https://s3.amazonaws.com/jivamubug/16915647802.pdfIn PDF document text
    • https://s3.amazonaws.com/rilexazejuzovep/54754803711.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/excel_inventory_sheet_free_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/tumblr_image_er_iphone.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/kaxosunuzovido.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC5 5080 bytes
SHA-256: d673048d1bdbd6b7876e8f2d685c3201228d90d7fdf792a0b73ed58f249ab4e5
font_01_sfnt_off0000f0fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FA 10796 bytes
SHA-256: 2fb3960c5198cff6adbbc91e8f1ab33c874b1948485488f8446b763ac18f51a5
font_02_sfnt_off000115e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115E0 4324 bytes
SHA-256: 7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71

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