Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf064fcb29ff6211…

MALICIOUS

PDF

81.9 KB Created: 2021-03-23 20:50:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 896c18288d0384dc357595d50eeb70a8 SHA-1: ea6a47e7e4e6fff59a332502e30ffd58b9a8599a SHA-256: bf064fcb29ff62118e87ae3afb4f6c35298023a5a620365a206ccc7fe6c10585
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=always+korean+movie+subtitle PDF link annotation
    • http://rexapeduke.66ghz.com/audi_s4_avant_review_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415950/normal_5fd70df3d8e6e.pdfIn PDF document text
    • http://business-open.online/what_color_is_the_remote_wire_on_a_dual_radioz799b.pdfIn PDF document text
    • http://mikrotikwizard.com/brush_lettering_practice_sheet72zy7.pdfIn PDF document text
    • http://fbcopyright-center.com/402004418319ph76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417119/normal_601ce13c1618f.pdfIn PDF document text
    • http://allerlo.xyz/vizuxupametobolelajorol4glz3.pdfIn PDF document text
    • http://shopsmmv.site/tadaxagotudog8hwn.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379606/normal_6058ebf899bb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445130/normal_6026608968044.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/rerinago/mathsbox_55_problems_answers.pdfIn PDF document text
    • http://dusujelad.rf.gd/ed_and_ing_openers.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/solar_commissioning_report.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/life_story_of_david_attenborough.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/pandora_s_box_5_game.pdfIn PDF document text
    • https://s3.amazonaws.com/wunupalezozerud/83558699066.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/dejixemofapuxujix.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/sample_answer_sheet_for_cpa_board_exam.pdfIn PDF document text
    • http://vevuweminofilo.rf.gd/stairway_to_heaven_hawaii_2020.pdfIn PDF document text
    • http://pirarotuweze.rf.gd/30731302959.pdfIn PDF document text
    • https://s3.amazonaws.com/wujixus/sivumovas.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/96881462508.pdfIn PDF document text
    • http://rebokomixuxoj.epizy.com/fill_in_the_missing_punctuation_worksheets_ks2.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_off0000f62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF62A 3400 bytes
SHA-256: 1920e8a8022a80a711344ff916cdbf147b882a2d1ab4c6ad9d9779d0aa2cce4b
font_01_sfnt_off00010279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10279 5280 bytes
SHA-256: e7662ebc664e3580fe56929021b2ba008bc7624ba9d575e49b71e88d24933559
font_02_sfnt_off00011479.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11479 11000 bytes
SHA-256: e6a3d22e635401f1c71e132d4c9ba69fc270199703a997fa1414fa8e49896513

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