Malicious PDF — malware analysis report

Static analysis result for SHA-256 77460bd05164b0bd…

MALICIOUS

PDF

72.4 KB Created: 2021-04-04 00:54:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7b2e2a67b3153a99160029541b3d4c7f SHA-1: 933b927c23dce745989c4bd7f6e9482d4070a01e SHA-256: 77460bd05164b0bd4a97488c279006de01ff985e441477cc7bae61ee2b2515ce
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 0.9991

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://xezojetit.ru/123?utm_term=las+reformas+borb%25C3%25B3nicas+mapa+conceptual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476432/normal_6012c15933935.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491669/normal_601610ea336d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366341/normal_6056852ea64da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489713/normal_60630b1e83fb5.pdfIn PDF document text
    • https://cdn.sqhk.co/zawatilirip/QerJnge/gexopukegakewaselovifeja.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/Lgj45jc/tv_series_pub_quiz_questions.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478137/normal_603044eff2931.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/59c013f6-18f3-4de2-839e-09e14c1e1c7f/3222593347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb903bb5-146b-4d33-a0d7-424463cc4844/defiant_light_timer_directions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5373346a-c8ef-4095-930b-11ee69e412f2/igloo_ice_machine_troubleshooting.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea6ccf2c-c5b1-4d46-b770-6048062fd91b/97072209678.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4e820ee-7dc9-4826-8eba-b5b8301b6ec3/48269760478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12afac8a-ce58-4e6d-905e-72bfe5971074/integration_of_x_cos_inverse_x_upon_under_root_1_-_x_squared_dx.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/beka_boy_sarafina_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51e59b12-334f-4e8a-8582-2d2222b02a73/91952208996.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/lg_lp0814wnr_hose_size.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70fdddf2-214e-45a5-8a5c-88e877f53b74/list_of_present_tense_stem-changing_verbs_in_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/tidigudetefumof/61905381990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aeb3516b-9aeb-4769-9b8b-20ecdde933dd/27342540894.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d88cf142-2100-40aa-958f-092305e51212/85618647091.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/cuisinart_pro_classic_food_processor_directions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9ae4e51-2dfb-46bc-9c22-5ef6f06727ca/local_area_network_connection_doesnt_have_a_valid_ip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c09d402d-cd82-4e1d-9388-9e1945e49a1a/cognitive_behavioral_therapy_treatment_plan_for_anxiety.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3ed04a2-c4ba-49fb-b960-c286045964d8/165041253.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_off0000da9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA9C 5380 bytes
SHA-256: 496027bdbc13531d075c1bdddc8627a65487d30124353cb049bfde1b2c9ff6f8
font_01_sfnt_off0000ec8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC8F 11364 bytes
SHA-256: 5d8612e80434af538c67946a8631ad828c951e85a52e9e4070f06f6dd1db10aa

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