Malicious PDF — malware analysis report

Static analysis result for SHA-256 d84c33fb6ecc880c…

MALICIOUS

PDF

77.8 KB Created: 2021-03-25 23:11:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 58a2a96fc1fd04404eddf859d65226e3 SHA-1: 2325a48e455eae0e6b4cc06fc063e60360c7e7fa SHA-256: d84c33fb6ecc880c4b4efaa1d37b4b3f8c337a1dda29a3682c06f7cbc9e365c1
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to a suspicious domain, likely intended for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/aws?utm_term=international+marketing+strategy+and+theory PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4388173/normal_5fde41221a5d8.pdfIn PDF document text
    • https://cdn.sqhk.co/tajixixejafi/gQ3haMC/best_muscle_cars_for_road_racing.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496828/normal_5fda80021d0e6.pdfIn PDF document text
    • https://pimiwunuxijekez.weebly.com/uploads/1/3/2/7/132741089/medewimev.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482190/normal_602c6f2d6d4a2.pdfIn PDF document text
    • https://cdn.sqhk.co/sofilita/jbibjfE/arkham_horror_card_game_investigators_rankings.pdfIn PDF document text
    • https://cdn.sqhk.co/kuwusemob/kijchgo/visolonos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446285/normal_5fce18225f658.pdfIn PDF document text
    • https://pebawozo.weebly.com/uploads/1/3/4/8/134865175/155be05f0412.pdfIn PDF document text
    • https://cdn.sqhk.co/sowojusawepu/eiepjiw/legal_uk_knives_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/2jcrr1j/water_slide_jumper_costco.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415327/normal_603791cc3ecc0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5984e891-aecd-43e6-866f-efdb297c9c35.filesusr.com/ugd/403565_2d0e978089d34a978b4e2bd1e7793ed7.pdf?index=trueIn PDF document text
    • https://1a6c606f-1efd-495f-9370-57f425d809fd.filesusr.com/ugd/1be480_cb07ec13cef841cd80dfa3c5c7d0a3f8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/energy_sources_analysis_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/boduxatavepe/baal_veer_1114.pdfIn PDF document text
    • https://be08d7d4-326a-4801-be9d-4496af17a43b.filesusr.com/ugd/d31907_e737f2f084804159af3d744280b08361.pdf?index=trueIn PDF document text
    • https://47c0d0ed-94e3-447f-940a-e265262d053f.filesusr.com/ugd/a43ec6_c979ba342f774d3bb1ae7b2fe4522ca2.pdf?index=trueIn PDF document text
    • https://2eb5e741-fe40-4e13-9a70-20af0821b154.filesusr.com/ugd/6cf56c_d9fb5c9fe2f3459193ef50afc338065a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/novifamigot/xabalamizovikogojasame.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/69173267456.pdfIn PDF document text
    • https://s3.amazonaws.com/zijivevip/truman_capote_christmas_memory_film.pdfIn PDF document text
    • https://s3.amazonaws.com/jiguwuzobozobaz/40990813474.pdfIn PDF document text
    • https://s3.amazonaws.com/litunux/weekly_calendar_template_word_doc.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_off0000f352.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF352 5344 bytes
SHA-256: 6e5b7e0f43c73cb242127c23a7be3f4b0e7860e5bb373d40b061dc33a7691568
font_01_sfnt_off00010558.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10558 10384 bytes
SHA-256: a86c3c96b3d21c44586ba52b587c39945dbbeb7ddf4145e5501b8fa7f0ae524d

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