Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2361709a73bd182…

MALICIOUS

PDF

82.7 KB Created: 2021-03-06 04:23:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 9d9b2a52a2c43e3b6857e1c369821052 SHA-1: 47cfc77a076c36deff034f4e73d66afb002bcf50 SHA-256: e2361709a73bd182776628fed14f8ea7ffe9b85edd9408ac9f26e0ff265b1e50
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely intended to host a phishing page or a second-stage payload. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDF documents from web content, further supporting the phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://dugedepap.ru/strik?utm_term=what+is+content+knowledge+management+software PDF link annotation
    • http://starconflict-game.ru/46271209897yy9oo.pdfIn PDF document text
    • http://kudretbozaci.com/cool_mist_vs_warm_mist_humidifier_for_allergiesw20vl.pdfIn PDF document text
    • http://botanilix.mygamesonline.org/tozirimiziruguxenodobodut.pdfIn PDF document text
    • http://swiss-gear.store/80604092295rtx9k.pdfIn PDF document text
    • http://zegererevez.medianewsonline.com/57280150054.pdfIn PDF document text
    • http://zukesijinizik.mywebcommunity.org/how_to_write_about_your_academic_achievements.pdfIn PDF document text
    • http://vosajizegek.mypressonline.com/calories_in_shrimp_taco_salad_without_shell.pdfIn PDF document text
    • http://gewusoluxul.scienceontheweb.net/535550223.pdfIn PDF document text
    • http://lnstagramsupportingcenter.com/ain_t_no_sunshine_sheet_music_keyboardrt3vi.pdfIn PDF document text
    • http://summ-green.fun/why_wont_my_rca_voyager_tablet_charger_work7khkl.pdfIn PDF document text
    • http://zugemenelil.medianewsonline.com/60275494468.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/genedesowul/is_newsmax_on_spectrum_cable.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/3020839088.pdfIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_509fbb748ffa4758a1654a56389a4c6c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zowibatev/subject_verb_agreement_worksheet_grade_5.pdfIn PDF document text
    • https://78e27e65-9996-4239-a63d-7a21722db537.filesusr.com/ugd/03f576_1464b3181cfb49e884e0a609a0b1a70f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/913329364.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/gipazijitu.pdfIn PDF document text
    • https://3437305d-a3f4-4f94-9a63-846dd410f5be.filesusr.com/ugd/ffe76b_edd1a7fea7904e62829542100b547118.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e6c9bc70-c233-4022-ba59-255f8d118b55/17604926983.pdfIn PDF document text
    • https://da18e6a8-d720-42de-a88c-3f13daad7efb.filesusr.com/ugd/08fe48_f2ce6b4f81934833b75628fef4f1ea5f.pdf?index=trueIn PDF document text
    • http://nejesezape.myartsonline.com/zepajinonuxiwitomud.pdfIn PDF document text
    • http://tafiwepamubov.atwebpages.com/dish_wally_wi-fi_usb_adapter.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7acb27eb-2512-41e4-a77f-6940e3062698/91050250328.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0518d34e-817f-45d7-9060-c6810a63d52e/wowiwojaxad.pdfIn PDF document text
    • http://mizetum.onlinewebshop.net/54689640591.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_off000106f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F7 5604 bytes
SHA-256: 2b73e7192dcd1b3d88e6f81a8d9a1ff79d3eb25b15f8f36a7311deb6149ac455
font_01_sfnt_off000119f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F6 10332 bytes
SHA-256: f60413bdf5b259509aa83b27d3be185543988472f4cd479084831412dc23fc8a

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