Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffa14f58677df297…

MALICIOUS

PDF

81.8 KB Created: 2021-03-09 02:32:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2d0d8c9b464421910082043b0d49785f SHA-1: 22bcf8924a56e8b7c438c3f2ff88e179f0ac55fd SHA-256: ffa14f58677df297ab95806bd7f03c54b50ae2644f79d254f2dde23d54c33dfc
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious domain. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/award?keyword=biztalk+server+2020+unleashed+pdf PDF link annotation
    • http://wejuzofibab.medianewsonline.com/mevifiwezu.pdfIn PDF document text
    • http://mantenancie.com/are_safety_first_car_seats_compatible_with_graco_strollersoypst.pdfIn PDF document text
    • http://migriruy.ru/63423620503pklno.pdfIn PDF document text
    • http://sisogelodaze.medianewsonline.com/biblia_reina_valera_1960_audio_mp3.pdfIn PDF document text
    • http://sijubuwejipamun.mywebcommunity.org/55867816829.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/63ff8f52-a890-4854-ac90-f7ab24863321/92061399097.pdfIn PDF document text
    • https://s3.amazonaws.com/magapeguwabe/guideposts_what_prayer_can_do.pdfIn PDF document text
    • https://6843e3eb-5573-46e1-90a0-370cfc2b4a0d.filesusr.com/ugd/89b1bc_461f2809187343e3bd5e14d63e0cf15c.pdf?index=trueIn PDF document text
    • http://likutolejit.onlinewebshop.net/gemapenulesagar.pdfIn PDF document text
    • https://s3.amazonaws.com/xoguwavosuje/helicobacter_pylori_treatment_guidelines_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abac93c5-3b3e-41af-951e-399046771153/feferuwovadex.pdfIn PDF document text
    • https://d4e73f68-9870-4c81-be0c-0a6dd7607cd2.filesusr.com/ugd/6f53d7_6abd2b3079594992a76d7dd86a8baab3.pdf?index=trueIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_a4c01da07729482998aea4abe58595a7.pdf?index=trueIn PDF document text
    • http://japinoxizidunub.myartsonline.com/72085133311.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/74187714813.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/24442278726.pdfIn PDF document text
    • http://vajekalisafemun.rf.gd/binary_eutectic_system.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/nafutefebafasabizasufaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3a71da8-736a-4d40-8390-8f828e090ba4/what_is_life_cycle_theory_of_consumption.pdfIn PDF document text
    • http://gerevukome.rf.gd/strahd_character_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0792651-32f3-45fe-ad66-974f8fa41643/pretty_little_liars_books_series_4.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_off00010265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10265 5624 bytes
SHA-256: 9fed04b9558d3e9e4c0e7d0b9207ebfa6ecc23683503a6005ae856d9c849ad49
font_01_sfnt_off00011599.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11599 10580 bytes
SHA-256: b49e52055d032772582b1516e2892fab4bff88e88446c0d211d4458fdef2881a

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