Malicious PDF — malware analysis report

Static analysis result for SHA-256 eabc5492e11bc84c…

MALICIOUS

PDF

113.6 KB Created: 2021-04-07 04:43:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ea3200d812b31829cf5ff9f45c2270c6 SHA-1: 7baf0e0e4f4fefece4255bc1efaf4e82c5f2a5a1 SHA-256: eabc5492e11bc84c565b4f2933ba2bc6355ebed11c3bbdfef8b75cd3498e77ab
126 Risk Score

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection. It contains numerous embedded URLs, with several pointing to suspicious domains and one specifically identified as a link farm on disposable hosting. The document body, though heavily obfuscated, contains references to URLs and potentially misleading content, suggesting a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=indian+history+documentary+bbc PDF link annotation
    • http://1pokypki.website/caster_sur_freebox_revolutionalqr3.pdfIn PDF document text
    • https://tajewarupimef.weebly.com/uploads/1/3/2/6/132681391/4303111.pdfIn PDF document text
    • http://halfraire.xyz/vupomazizoguvekosaxapmegj4.pdfIn PDF document text
    • http://lnstagram-helping.live/2005_honda_odyssey_transmission_filter_locationkjpw2.pdfIn PDF document text
    • http://ligugiban.scienceontheweb.net/a_geek_in_japan.pdfIn PDF document text
    • https://wipukanutunuk.weebly.com/uploads/1/3/1/4/131437017/76013.pdfIn PDF document text
    • http://myluckybet.xyz/warhammer_undead_army_book6s908.pdfIn PDF document text
    • https://lolaxasima.weebly.com/uploads/1/3/4/7/134747116/aec7e4d12fb6.pdfIn PDF document text
    • https://kisetizep.weebly.com/uploads/1/3/5/9/135992433/3782081.pdfIn PDF document text
    • http://sell-toclick.online/81220927546a7fph.pdfIn PDF document text
    • http://meroxisawifagu.mygamesonline.org/agatha_christie_poirot_novels_list.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/fekife/mewabeguxetugifiro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b8ea829-8f24-41e3-b240-5b6d582b90d4/madinah_arabic_vocabulary_book_3.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b54ef298-8086-4cd5-be86-8b969b380fed/how_to_service_a_honda_3000_generator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54b8dbdf-351c-475e-b15e-77545eb4481b/how_to_clean_chicco_keyfit_30_infant_car_seat.pdfIn PDF document text
    • https://4a0f17ac-6ce6-4c05-9546-25c48d39d9f7.filesusr.com/ugd/cd79e3_11194411351c427981820dd1a66a2c00.pdf?index=trueIn PDF document text
    • https://f4a80ce2-0a24-44e2-aff7-13c87a434ee9.filesusr.com/ugd/ace063_2f8f2267791040219077435f94c01be6.pdf?index=trueIn PDF document text
    • https://b615eccc-4413-4b1d-8109-ede925130a83.filesusr.com/ugd/0994f9_1f5c7c990b2b419da3cbb27759f7ae23.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e53fa80-feda-4738-b031-eb8fdfdb15fb/sql_interview_questions_and_answers_for_experienced_java_developers.pdfIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/cherry_tree_poem_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/pevuwarobuvowa/why_is_my_sharp_tv_volume_not_working.pdfIn PDF document text
    • https://8e8ef6ac-913c-489f-8395-c30730e7ba0a.filesusr.com/ugd/f39c52_3d576a608d644db490630b5995a8a7e9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5c0e768-a0a4-4c73-872c-889aee3218a4/restorative_yoga_poses_for_third_chakra.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_off00018239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18239 5324 bytes
SHA-256: b0aeb378efd56d9cefafb05934a628184230ca19d0002ded4440e85caaf665c1
font_01_sfnt_off0001942c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1942C 10676 bytes
SHA-256: 4f907dcd58c9f3f3d725a4b49e0256f807d1334582e70c832b3236cebc70b382