Malicious PDF — malware analysis report

Static analysis result for SHA-256 00cee0bfb9a4228d…

MALICIOUS

PDF

109.0 KB Created: 2021-04-25 17:17:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 36a3c61aaa3889d07ea95555fdea1f70 SHA-1: 5d7c5917cdf2122fb2307e2a743a4a3ca9b1aba9 SHA-256: 00cee0bfb9a4228dd0338c293ef4e493ea6e267127e33428a41fc07624077aa5
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains an embedded URL pointing to 'jumiwimov.ru', which is likely malicious. The document body, though heavily obfuscated, contains text related to 'ISO 9001 certified manufacturer', suggesting a lure to entice users to click the malicious link.

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://jumiwimov.ru/strik?utm_term=iso+9001+certified+manufacturer PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388274/normal_5fcca1b9f4187.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480905/normal_605df49551b80.pdfIn PDF document text
    • https://cdn.sqhk.co/sadinuko/iJuT36p/new_action_movies_2020_full_movie_english_hollywood.pdfIn PDF document text
    • https://cdn.sqhk.co/tavikagisato/hahgfih/usana_prenatal_cellsentials.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461525/normal_601306dc28556.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4528915/normal_600b0dcd47ab5.pdfIn PDF document text
    • https://cdn.sqhk.co/vakamuzawa/bhijifA/il_vello_d_oro_taormina.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459029/normal_5fe40ed5343cb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420240/normal_5ff2c657d62a7.pdfIn PDF document text
    • https://cdn.sqhk.co/dafisuwikib/giagfiw/67937251544.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_602ef4fcb0a48.pdfIn PDF document text
    • https://cdn.sqhk.co/ropobemuma/hcuhhie/photo_studio_near_me_for_rent.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417037/normal_5fcaa8d80c66f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453747/normal_5fe0a4c4afdbe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460968/normal_5fcd3be7743d8.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/sitozi/charlie_angels_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/sixolose/battle_realms_free_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/lupebesu/24053543612.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/airplane_mechanic_salary_uk.pdfIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_a20a60c7432749a398ba30ec040fd219.pdf?index=trueIn PDF document text
    • https://f5ab370f-1445-465c-ae0a-adb246d340ff.filesusr.com/ugd/2d95ce_d5984991943d4bf195f5ab1b3e6b08c3.pdf?index=trueIn 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_off00016ca0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16CA0 5424 bytes
SHA-256: f9f5a9029996b0f27cfa796968745725685cb2028698ed90fb1a93535ab08dcd
font_01_sfnt_off00017efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17EFB 12264 bytes
SHA-256: 4bdb40b1043d005452a4f0682293741e2c7b24b5fecd013b383248d8aac25067

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