Malicious PDF — malware analysis report

Static analysis result for SHA-256 1883dba5c06b8c65…

MALICIOUS

PDF

77.0 KB Created: 2021-03-24 16:41:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: ed3ee7b3f7baf71aac0e37f540dc23ae SHA-1: d96c1f76501cfc077806d6b12aca8114383004fc SHA-256: 1883dba5c06b8c65ea6937c526e7ca26a4dd5b4f71497b018a0f8367d6c36fcf
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan attempt. It contains numerous external URIs, with a primary focus on directing users to potentially malicious domains like 'fokemale.ru' and 'vopugixeroramox.medianewsonline.com'. The document body, though heavily obfuscated, appears to contain keywords related to the URLs, suggesting a lure to a website disguised as informational content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/wix?keyword=ted+bundy+teeth+tattoo PDF link annotation
    • http://vopugixeroramox.medianewsonline.com/materi_akuntansi_keuangan_lanjutan_1.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/mubikemamobufovowaqhhi5.pdfIn PDF document text
    • http://mevixonur.mywebcommunity.org/29021246506.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413457/normal_601fffe39957d.pdfIn PDF document text
    • http://bawikivogo.22web.org/is_frozen_daphnia_good_for_tropical_fish.pdfIn PDF document text
    • http://towufato.mywebcommunity.org/thailand_visa_on_arrival_form_2020_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420602/normal_60072b0434acd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458144/normal_6031fb73ba740.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455194/normal_5fc98d25673d8.pdfIn PDF document text
    • http://websporizle3.com/word_of_the_day_oxfordzmm9s.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501231/normal_5fdae59594e86.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369793/normal_60443cda11259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411932/normal_605010cf41d45.pdfIn PDF document text
    • http://tenipimutav.mywebcommunity.org/beginners_gym_workout_plan_for_weight_loss.pdfIn PDF document text
    • http://gokawojop.scienceontheweb.net/eau_guidelines_penile_cancer_2020.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/sazomo/pomok.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/victorian_auditor_general_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/dawetofuliretatizilobevu.pdfIn PDF document text
    • http://rixedimuven.epizy.com/who_are_the_descendants_of_the_sumerians.pdfIn PDF document text
    • http://tadidemoribezor.epizy.com/asme_section_viii_div_1_free_download.pdfIn PDF document text
    • http://fugewad.rf.gd/mireregipexox.pdfIn PDF document text
    • http://gejevebo.epizy.com/aithey_aa_bharat_song.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_off0000f0f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F7 4796 bytes
SHA-256: 97d245b79d56c7708ed334d6007505bfedabf41e93c39a33281c84ffd186664d
font_01_sfnt_off00010149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10149 11024 bytes
SHA-256: 480ae9ff95114d5f60a61b7e60faae3be5b5efea05f03c12db7a40c12f8cd6b5

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