Malicious PDF — malware analysis report

Static analysis result for SHA-256 513161aae5378c7e…

MALICIOUS

PDF

71.2 KB Created: 2021-02-27 10:53:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: e380713eecb99cbf8a008187539f116d SHA-1: 285deea690f53743b1c8db30c7b3ad10435c27f9 SHA-256: 513161aae5378c7e002ca944fac111ae9a0f0a7ea54f7dbaf11e8689f1220b0c
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/award?keyword=how+to+change+chime+on+carlon+wireless+doorbell PDF link annotation
    • https://cdn.sqhk.co/gujowaxexag/jgjhiiT/demakobejo.pdfIn PDF document text
    • https://takadoturig.weebly.com/uploads/1/3/4/1/134108809/8298336.pdfIn PDF document text
    • https://cdn.sqhk.co/lakuxezaj/KePjiQD/57378404634.pdfIn PDF document text
    • http://romomikas.22web.org/lineage_2_high_five_lvl_guide.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/ppp_lesson_plan_example_present_continuous.pdfIn PDF document text
    • http://tasuvelimu.22web.org/how_to_adjust_a_photo_to_passport_size.pdfIn PDF document text
    • https://cdn.sqhk.co/kavuluxaja/eih2gcV/boo_at_the_zoo_baton_rouge_prices.pdfIn PDF document text
    • https://cdn.sqhk.co/tefulobesa/ehbsshc/zamav.pdfIn PDF document text
    • https://cdn.sqhk.co/lilaxikixo/suhjjvH/best_golf_gps_for_wear_os.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pimokizogo.epizy.com/hedonic_test_sensory_evaluation.pdfIn PDF document text
    • http://tinegupufijogun.epizy.com/how_to_use_nuance_dragon.pdfIn PDF document text
    • http://molodetagako.epizy.com/ximasuje.pdfIn PDF document text
    • http://wekidezeze.epizy.com/videmudulop.pdfIn PDF document text
    • http://lebekad.rf.gd/the_enneagram_book.pdfIn PDF document text
    • http://parimafilifupev.rf.gd/charitable_giving_report_2018.pdfIn PDF document text
    • http://leragirifodoz.rf.gd/assamese_dictionary_original_apk.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_off0000d920.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD920 5544 bytes
SHA-256: 8f746a31e4c0caaa5a331f387e13de045237c7cde57560baea94ce86c7839c67
font_01_sfnt_off0000ebdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBDD 10428 bytes
SHA-256: 0b8d61f0e7bb1de36a21c6966162f9b1c3b6bd987fbb8ca942a550ea3df18385