Malicious PDF — malware analysis report

Static analysis result for SHA-256 daba0d508d370534…

MALICIOUS

PDF

79.7 KB Created: 2021-03-24 15:40:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6f58175351a6110c507f2fb564993493 SHA-1: cc1d385d902e29d5f3c64342b6cd834b802f8e42 SHA-256: daba0d508d37053418a0dc9f0f92bcbb5961e0a19843973846994ba87c62351c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/strik?utm_term=newborn+baby+girl+winter+clothes+lot PDF link annotation
    • http://wijetaz.mypressonline.com/boburajanukexim.pdfIn PDF document text
    • http://lovupijuti.getenjoyment.net/57720089916.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375088/normal_6057c44e620ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_603d1e7acf392.pdfIn PDF document text
    • http://watogoda.mypressonline.com/calendario_sep_2020_20.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385876/normal_5ffa0c7b8ecef.pdfIn PDF document text
    • http://kinemulawaw.sportsontheweb.net/britax_car_seat_base_lock_off.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502833/normal_5fec032ba06dd.pdfIn PDF document text
    • http://jasazotinalol.mygamesonline.org/accounting_interview_questions_with_answers.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/dewutexorob/ryzen_undervolt_guide.pdfIn PDF document text
    • http://laxizal.epizy.com/gurupukuperib.pdfIn PDF document text
    • http://rifezovepon.rf.gd/vshare_ios_10._2.pdfIn PDF document text
    • http://vubejipolav.epizy.com/how_to_use_multiple_excel_functions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f101bde3-6c6e-4012-8af6-c5e77aca5d22/2007_polaris_sportsman_500_efi_wiring_diagram.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c0f4f57-c547-449f-b33a-fe32e7207fc5/hair_clipper_set_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b624b272-0ac4-4842-b8e7-3250abb2fa1c/what_jobs_can_you_get_with_an_mba_in_international_business.pdfIn PDF document text
    • https://s3.amazonaws.com/bamepofewalada/gutulevomakag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/603d210d-9cdf-4c0a-853f-04fbff82aab4/southern_ute_indian_tribe_language.pdfIn PDF document text
    • http://mupevisad.epizy.com/treatment_acceptability_questionnaire.pdfIn PDF document text
    • http://feniboladesa.rf.gd/gereb.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/5238025573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/daaad767-88ff-47a3-8552-00b7839862ac/rci_2950_dx_mods.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_off0000f999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF999 5364 bytes
SHA-256: 43eb52271cbafd59b184606dab00a6e61ad9f396e7c3dab444a6d57600787d5d
font_01_sfnt_off00010bed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BED 10796 bytes
SHA-256: a1fee86fa3ac4e6bbbc85236c49351708b3b637145d4591dc7d3be60690bacba

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