Malicious PDF — malware analysis report

Static analysis result for SHA-256 23b5e02d8db1b505…

MALICIOUS

PDF

84.2 KB Created: 2021-03-22 05:31:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 4d26126f0c126638fe4d2c7a8912ad21 SHA-1: be2d9f02bd2e60ab14841191675563c1890feea1 SHA-256: 23b5e02d8db1b5054a478e751050dcb7fca24543d34efc42215607f3d3ce82aa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs, with a primary focus on 'https://xezojetit.ru/award?keyword=total+africa+cup+of+nations+2020+programme+pdf'. Heuristics indicate this PDF is part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. ClamAV detection as 'Pdf.Phishing.Trojan' further supports malicious intent. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://xezojetit.ru/award?keyword=total+africa+cup+of+nations+2020+programme+pdf PDF link annotation
    • http://fonomujolatuv.22web.org/61236650863.pdfIn PDF document text
    • http://botavubapisod.mywebcommunity.org/how_much_is_a_battery_for_a_2015_toyota_camry.pdfIn PDF document text
    • http://temezisabekazev.iblogger.org/what_is_daring_mean.pdfIn PDF document text
    • http://surisetufuna.iblogger.org/is_tableau_prep_free.pdfIn PDF document text
    • http://wazepewazivulil.mywebcommunity.org/english_grammar_simple_present_tense.pdfIn PDF document text
    • http://tavaxibewoposo.iblogger.org/nunatuxugegokavujokabe.pdfIn PDF document text
    • http://visanekis.iblogger.org/53882733830.pdfIn PDF document text
    • http://nijaxubazaziw.mypressonline.com/ridugimoraka.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d0971b2-db0c-412e-a6f7-6f383773733f/cost_to_rebuild_powerglide_transmission.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f5673e1-3eb4-41ec-91d3-e392c0029a64/85600837337.pdfIn PDF document text
    • http://pasufok.rf.gd/back_ups_es_550_software.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ea2ff44-a790-432a-8273-90038aaf0e5c/jobigamim.pdfIn PDF document text
    • http://bokawevetejap.atwebpages.com/gafatoxof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9b2ef8e-9c1c-43e1-b982-a7ac6f0fa4ac/how_to_write_a_250_word_scholarship_essay.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a07e247a-13c1-42c2-b4d7-983f2679a1e3/2011_ford_f250_repair_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35913aa7-f5ef-4fa8-863a-175ff8ab9e82/checklist_manifesto_review.pdfIn PDF document text
    • http://zuzojep.rf.gd/bizet_carmen_intermezzo_sheet_music.pdfIn PDF document text
    • http://beguresenoraw.epizy.com/kanmani_pol_en_amma_song_masstamilan.pdfIn PDF document text
    • http://texozokuvet.epizy.com/where_to_study_law_in_europe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de1e8b7d-3c7b-4f20-855d-56a38334a03b/how_to_draw_realistic_eyes_simple.pdfIn PDF document text
    • http://dofumexuvit.epizy.com/cheap_hp_photosmart_5520_ink_cartridges.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000109ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EF 5700 bytes
SHA-256: 29f2962525e2066412ff7acc89ba82dde8b130333e634cb20e438cf813c93a9c
font_01_sfnt_off00011d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D41 11400 bytes
SHA-256: bd1d4fffcbfb88fb6d20844cc11b471e541b099f2f694d2cbb05e0b1bb22a13d

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