Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fef6e0179272736…

MALICIOUS

PDF

77.9 KB Created: 2021-04-08 19:28:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a25e1ccc8f5b07246f1b4c0799957ce2 SHA-1: b5b14cb8392faa1346d8f370f6bae9fff147e9bb SHA-256: 2fef6e0179272736279ec95746aae4c1e523d85906991a3b828796b759cf9505
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The document body, though obfuscated, suggests a lure related to 'cost to repair jeep frame', likely directing users to malicious sites for further exploitation. The presence of external URIs and link farm characteristics indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://nipisod.ru/strik?utm_term=cost+to+repair+jeep+frame PDF link annotation
    • http://genoray.pro/allahu_akbar_in_arabic_ringtonessddp.pdfIn PDF document text
    • http://gakukuketisalum.scienceontheweb.net/32027038438.pdfIn PDF document text
    • http://vevaroda.scienceontheweb.net/98666453844.pdfIn PDF document text
    • http://lozhobelir.space/android_bufferedinputstream_to_byte_arraykfe26.pdfIn PDF document text
    • http://bipowilago.mywebcommunity.org/the_tibetan_book_of_living_and_dying_audiobook.pdfIn PDF document text
    • http://peteferix.mypressonline.com/calcio_antagonistas_mecanismo_de_accion.pdfIn PDF document text
    • http://flowerport.shop/the_fall_2006_film_castcndzp.pdfIn PDF document text
    • http://nakidki-alkantara.xyz/back_formation_in_english_literature98g8l.pdfIn PDF document text
    • http://viewcreditscore.info/2005_nissan_pathfinder_serpentine_belt_replacement9ut3e.pdfIn PDF document text
    • http://itslm.fun/tilinodavotepivetidusosrema.pdfIn PDF document text
    • http://malemukinupogeb.22web.org/expressing_opinions_worksheets.pdfIn PDF document text
    • http://chebsvet.ru/sig_sauer_sp2022_9mm_luger_3.9in_black_nitronm6wu8.pdfIn PDF document text
    • https://damemerivojed.weebly.com/uploads/1/3/4/3/134378109/rosiliwigiri_rowonibon_medinat.pdfIn PDF document text
    • http://siteznakomstv69.space/jalivugewetobavgsbak.pdfIn PDF document text
    • http://pokemonrivals.online/85726465771o5qaz.pdfIn PDF document text
    • http://domexogod.22web.org/how_to_reset_brush_bar_on_dyson_dc25.pdfIn PDF document text
    • http://halfraire.xyz/57895143979cdm54.pdfIn PDF document text
    • https://mitigovoponezix.weebly.com/uploads/1/3/4/3/134375948/6927615.pdfIn PDF document text
    • https://gumomerad.weebly.com/uploads/1/3/1/8/131856086/pedemexijeneruka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://talaxapu.epizy.com/18757204542.pdfIn PDF document text
    • https://ea64ff4c-51e6-4efc-8cc1-399682447901.filesusr.com/ugd/961f18_f85b27b86bae43c4887a62e4f2894bfd.pdf?index=trueIn PDF document text
    • https://83bd47e3-138d-48d8-8d00-514fe13b91b0.filesusr.com/ugd/c87a2f_919f71fefc654099a7fa784d40269250.pdf?index=trueIn PDF document text
    • https://35479656-6a94-44d6-ac55-da507c14a2ae.filesusr.com/ugd/d68318_53b376d25a424481b9493d795d1f942f.pdf?index=trueIn PDF document text
    • https://20097937-9b7a-4da4-851c-33e9a8906939.filesusr.com/ugd/1e3518_fc45b51fe3dd44ff89c798b7862e16e1.pdf?index=trueIn PDF document text
    • http://fufolozanija.epizy.com/maps_of_bounded_rationality.pdfIn PDF document text
    • https://a3c35cc3-4a3f-4d41-ab51-8b3e4b114d30.filesusr.com/ugd/2b25b5_ebe6c6f73ad34d549fb835b0d535edef.pdf?index=trueIn 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_off0000f2d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D2 4996 bytes
SHA-256: 2ed3db599f15fb31e86fec0c95ebff52cd3d2d3ed871be2906cc4ff4303926ea
font_01_sfnt_off000103be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103BE 10956 bytes
SHA-256: 0b0e46525e48ab7ca29e06ec9672e166f610d0d92b959d52fd178364d1336a30