Malicious PDF — malware analysis report

Static analysis result for SHA-256 459f03fc27f0e8dc…

MALICIOUS

PDF

72.2 KB Created: 2021-03-05 05:37:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ddebbfe4f635d09176ecaed73321143c SHA-1: f73f5ac0921fdd599f457b3eca1c2a3141779de9 SHA-256: 459f03fc27f0e8dc5dea8b26a43462306dc86a5a3c5a6ced8fa7c1b483adbe4d
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/award?keyword=how+many+calories+in+a+boost+protein+supreme In PDF document text
    • https://jameropavide.weebly.com/uploads/1/3/4/6/134699307/bupez.pdfIn PDF document text
    • https://xetibipu.weebly.com/uploads/1/3/4/5/134528590/cbd97a9.pdfIn PDF document text
    • http://garanibukumom.scienceontheweb.net/volume_of_polygonal_prism_worksheet_answers.pdfIn PDF document text
    • https://lolimoxozidexus.weebly.com/uploads/1/3/2/6/132682882/6f64fdf4fe1d3c9.pdfIn PDF document text
    • http://lizoguxumugef.mywebcommunity.org/35231987992.pdfIn PDF document text
    • https://sajofagexureleb.weebly.com/uploads/1/3/4/6/134652103/japezifabufekolaviz.pdfIn PDF document text
    • https://gazonigupeti.weebly.com/uploads/1/3/4/8/134879892/2201814.pdfIn PDF document text
    • https://ragadavifomo.weebly.com/uploads/1/3/5/3/135306528/5497288.pdfIn PDF document text
    • https://ximepovefuvaxoj.weebly.com/uploads/1/3/1/8/131856443/duruvanarovejeb_fejujug_xawiwiruvemise_ratimomipokagob.pdfIn PDF document text
    • https://gemitipob.weebly.com/uploads/1/3/4/4/134474898/melip-peved.pdfIn PDF document text
    • http://finoginujowiwi.mypressonline.com/tax_rate_changes_for_2020.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/netgear_gs108pev3_review.pdfIn PDF document text
    • https://lafefetakizin.weebly.com/uploads/1/3/2/7/132712235/5569727.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/how_many_calories_in_a_sonic_cherry_vanilla_diet_dr_pepper.pdfIn PDF document text
    • http://nutetuxiv.mygamesonline.org/maytag_stackable_washer_dryer_reviews.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/vuxalirudidel/43150503842.pdfIn PDF document text
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_73a77677207f48ef89ba989ec9ce45f2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/mera_bhola_hai_bhandari_ringtone_wapking.pdfIn PDF document text
    • https://e809654a-a95b-4dbc-a338-24085255a2f8.filesusr.com/ugd/1b6cec_b78443faa256479eaef253e255753d0c.pdf?index=trueIn PDF document text
    • https://95043331-d9de-4498-ad98-35b8ac3ee23f.filesusr.com/ugd/5740b2_72e4da11df094e7797049ccd9288e716.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/pathophysiology_of_down_syndrome.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/rogumafuvinesovil.pdfIn PDF document text
    • http://felugibesixe.onlinewebshop.net/are_refurbished_beats_good.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_off0000dd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD07 5376 bytes
SHA-256: d36d8798aeeb3c760d781c69f15c66df7c3fbc300030e70549cae1a509a19714
font_01_sfnt_off0000ef47.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF47 10488 bytes
SHA-256: 7c127b1896fe0bc4fd07368f2e777a057a977ebbb1333aae31b700262aebac92