Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddaea8ce5469c256…

MALICIOUS

PDF

90.0 KB Created: 2021-06-09 03:18:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 4d86fd42f96ccbb18515d2b578ce9185 SHA-1: eb32328c92e395d1930585935508a362a9e0caeb SHA-256: ddaea8ce5469c2565178f4279c060c678c4430d1930a8e20169a3a2d0fda17f3
186 Risk Score

Malware Insights

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

This PDF file exhibits characteristics of a link farm, with numerous external links embedded within it, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were directly extracted, the PDF structure and embedded URLs point towards a phishing attack that likely leverages external resources to deliver a payload or further compromise the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://garglob.ru/pbw?utm_term=7+last+words+of+jesus+sermon PDF link annotation
    • https://lexifodupep.weebly.com/uploads/1/3/2/7/132712330/nizijasoxavise-muzagid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403814/normal_5fde5c8ac4ccf.pdfIn PDF document text
    • https://natuvowefuzun.weebly.com/uploads/1/3/4/5/134516005/184987.pdfIn PDF document text
    • https://wetifojijebene.weebly.com/uploads/1/3/4/4/134474841/c7a7a7351b2f96f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470224/normal_5fec20a38092b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tevimunon.pbworks.com/f/what_are_the_applications_of_colorimetry.pdfIn PDF document text
    • http://febamizilaw.pbworks.com/f/wireless_display_apk.pdfIn PDF document text
    • http://ditidema.pbworks.com/f/can_vs_may_vs_might.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e39b820-18be-4821-8d19-7335afbc6225/how_to_disable_car_alarm_on_2010_hyundai_elantra.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da722bec-a156-411a-a89b-52578cce59b1/how_to_download_gta_v_for_android.original_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a071143-3c8a-4294-b3f7-42f6e77c4f26/iq_test_questions_with_answers_in_tamil.pdfIn PDF document text
    • http://sovafiben.pbworks.com/w/file/fetch/144537744/vademcum_acadmico_de_medicamentos.pdfIn PDF document text
    • http://kefimazusob.pbworks.com/w/file/fetch/144830337/daily_bible_reading_calendar_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1aec0bdf-8d6a-4dc0-85f4-1cd54073b588/mikinamevulopivegezigu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7785bb43-3897-416f-ba38-72ecad617073/72059523426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4018df3a-f8c8-4609-863e-ae0d4fc8c6f3/rabofajarikujati.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca4a7518-6528-4f2a-9612-7cc9f46eeaee/how_to_connect_to_a_polaroid_bluetooth_speaker.pdfIn PDF document text
    • http://xosufixemuf.pbworks.com/f/62987424196.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ebc3b0f-dcd0-4db9-bf5f-6fa60139ad83/complex_number_division_worksheet_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6820ffb3-4698-409e-a263-ba86184b4cc9/how_to_make_deep_house_music_ableton.pdfIn PDF document text
    • http://molitutolu.pbworks.com/w/file/fetch/144587145/dacia_sandero_2020_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88b7240d-7cc4-4611-983f-dd4ad26d9876/what_is_the_latest_arsenal_news_now.pdfIn PDF document text
    • http://lifelekufa.pbworks.com/w/file/fetch/144831336/26740441700.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_off000121ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121BA 5204 bytes
SHA-256: e8470a5b7805f29201ccb8ca405425afe7fc7d6b8443320872f3167553a1f6c0
font_01_sfnt_off00013371.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13371 11100 bytes
SHA-256: 2c8e694fed88a798c12ed2f8c0ab6c127d51f3cba9e9bea7f5ad9539d7430412

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