Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a15075987d0860f…

MALICIOUS

PDF

86.0 KB Created: 2021-03-29 22:29:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 638dfcb94a31c45d341077b812f17bb6 SHA-1: 7a494de7d83e98f99650b587e1536c8213bb17a9 SHA-256: 2a15075987d0860fc7855ae55299d7d98a31caa757cd5def85e3174f27ca5fc9
126 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous embedded URLs, many pointing to disposable domains, suggesting it functions as a link farm to distribute malicious content or conduct phishing. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' specifically indicates this behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jumiwimov.ru/award?keyword=analogia+entis+erich+przywara+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4466398/normal_6056d93d125c3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485165/normal_5ff1cec03ead8.pdfIn PDF document text
    • https://cdn.sqhk.co/mavixuwaloz/C5ijjon/gusozodutukajazow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487186/normal_602d96ce36cca.pdfIn PDF document text
    • https://cdn.sqhk.co/baluwofuk/iZhjheI/ugly_s_electrical_references_2020_edition.pdfIn PDF document text
    • http://webomiwizux.22web.org/37378298791.pdfIn PDF document text
    • https://cdn.sqhk.co/sirobuse/hsjcicW/zion_national_park_guided_backpacking_trips.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368219/normal_6047396f4d0f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389097/normal_60051b1eb381e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_5fd9e8c4450bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452154/normal_5ff28ff3ad2a1.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/sojaxub/how_to_fix_rinnai_code_10.pdfIn PDF document text
    • http://jumivozapiv.rf.gd/nebaximigefesemijaz.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/gap_analysis_template_for_medical_devices.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b6c6ff2-ba1d-42d1-b40c-2553f49c8c9f/91782536325.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/lifofaxu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0677cb35-3315-4e61-9542-3ee9834c84e5/what_are_the_principles_of_phonics_instruction.pdfIn PDF document text
    • http://judejelalub.rf.gd/garabela.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/how_to_cite_appendix_in_apa_format.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/chicco_bravo_primo_trio_travel_system_in_alto_reviews.pdfIn PDF document text
    • http://narusalino.rf.gd/gugedoda.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52ee5717-bfc0-458a-b9f6-53f64d4bcef3/the_entertainer_piano_sheet_easy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9c7740a-b86b-457c-80d2-e3c6491c17b2/all_the_things_you_are_chords_ella_fitzgerald.pdfIn PDF document text
    • http://tivapatovike.epizy.com/lesod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a27c378e-a35a-435c-be1f-9ea0b4b88e5b/health_ometer_scale_model_230_manual.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_off00010fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FB3 5648 bytes
SHA-256: bbff4d379b02b05d834d6c3bfb6e5012ff727f3194e78237f57b3b99f80dc63d
font_01_sfnt_off0001230c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1230C 12148 bytes
SHA-256: 4de073938caff42d4333f94bb81837c96858e9e4fe2e98e4010899b9bca78fa6

Open this report in the interactive analyzer, or submit your own file for analysis.