Malicious PDF — malware analysis report

Static analysis result for SHA-256 e075e7509a1bdda9…

MALICIOUS

PDF

73.8 KB Created: 2021-03-14 07:38:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 00716b97c5b56e24e4187811634b37d6 SHA-1: b9af85afb8ad322cf9edaac78b1bb7ec54c99062 SHA-256: e075e7509a1bdda9a2de16585c6751a6689ae08e840d48b4e3fe4fff5800e2af
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs and is identified as a link farm hosted on disposable domains, suggesting it's designed to redirect users to potentially harmful content. The presence of embedded URLs and the nature of the heuristics point towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://jacksth.ru/wix?keyword=around+the+world+bass+tab PDF link annotation
    • http://movizopolu.medianewsonline.com/elan_touchpad_driver_windows_10_toshiba_download.pdfIn PDF document text
    • http://bijepitujutix.sportsontheweb.net/jentezen_franklin_acres_of_diamonds_part_1.pdfIn PDF document text
    • http://onlyforyou.space/38731887092kd8qv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474980/normal_60498bb5c0886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462992/normal_603aa4f216b2a.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/adding_tooth_to_partial_denture_code.pdfIn PDF document text
    • http://pomirkapa.site/the_witchs_islehtep6.pdfIn PDF document text
    • http://datab.vip/82509247760qpb04.pdfIn PDF document text
    • http://zokugorevat.mywebcommunity.org/tadabbur_al_quran_english.pdfIn PDF document text
    • http://zomosidotewe.sportsontheweb.net/13836647871.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423460/normal_6033535cc4b52.pdfIn PDF document text
    • http://pribor-poverka.site/kotafijemrmjip.pdfIn PDF document text
    • http://lalashoppen.online/99010757659vbes6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://13006a6e-9b3f-4191-9e3f-064114488741.filesusr.com/ugd/34464a_afd1ffca09314c5e8d4893f0cb9ce104.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jaloto/97667368266.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/constitutional_law_outline_barbri.pdfIn PDF document text
    • https://7f1d4f38-7308-4051-b389-b8ed31312188.filesusr.com/ugd/e948c1_8793f5e4f4304ee1a709078a1b1e2f22.pdf?index=trueIn PDF document text
    • http://tatonokewa.epizy.com/kutinedegoxazape.pdfIn PDF document text
    • https://s3.amazonaws.com/sazixipame/why_wont_my_kenmore_elite_dryer_turn_on.pdfIn PDF document text
    • https://aa514bbb-a96e-4bc9-8ff3-0ca2edd1104f.filesusr.com/ugd/3fc21f_ee92329e07e048feb2261011361a8376.pdf?index=trueIn PDF document text
    • https://6c036dbd-b327-4678-b778-de8a2ee7bb50.filesusr.com/ugd/ed64d2_e2446231d7e24ec0a465301533749060.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/stored_procedure_vs_view_performance_oracle.pdfIn PDF document text
    • https://s3.amazonaws.com/woneketelak/docket_sheets_lancaster_pa.pdfIn PDF document text
    • http://xujogefup.rf.gd/chogada_tara_song_bestwap._link.pdfIn PDF document text
    • http://nofaramubibuv.epizy.com/vekofuxifebumivibej.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_off0000e4dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4DC 5136 bytes
SHA-256: c2920dedb7373bea36e4f645babd78b35ac011621f3f813a60bad4701ae7ca09
font_01_sfnt_off0000f657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF657 10228 bytes
SHA-256: f2587d0ece476a6e46eaff0ed0f13f0f40a6ae56091cb84377f9cb250c353569

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