Malicious PDF — malware analysis report

Static analysis result for SHA-256 613a2d4b8d60635c…

MALICIOUS

PDF

69.8 KB Created: 2021-02-26 06:40:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e09aeb913eb6f8e9d655dafe3ea6b13b SHA-1: d4caf9b0ed3e44514f4481cc0e281d7308fc384c SHA-256: 613a2d4b8d60635c811b0b0f24bcb3ca75f30618e5988634080336119ae6f61f
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://seumenha.ru/award?keyword=organic+chemistry+1+final+exam+practice PDF link annotation
    • https://vurabagugodemox.weebly.com/uploads/1/3/1/1/131164039/larigaximusizaj_wulokanej.pdfIn PDF document text
    • https://tavifarexup.weebly.com/uploads/1/3/4/6/134611028/ropawekipojowa_puwotozofumoteb_jiboxexilof_nojofirodoloku.pdfIn PDF document text
    • https://nuvusutapisi.weebly.com/uploads/1/3/4/4/134460305/9601131.pdfIn PDF document text
    • http://cmbespaceclient.xyz/56176719180vp38a.pdfIn PDF document text
    • http://redirunna.xyz/vibonexoduniwejaxp1pbj.pdfIn PDF document text
    • http://leaninrzpd.site/how_much_is_la_fitness_monthlykx77n.pdfIn PDF document text
    • http://gprofights.ru/going_postal_tv_guidey02lw.pdfIn PDF document text
    • http://metazexepajesen.22web.org/third_day_child_of_god.pdfIn PDF document text
    • http://tamakar.tech/familiar_5e_guide5inta.pdfIn PDF document text
    • https://kimimidinom.weebly.com/uploads/1/3/1/4/131453749/5733382.pdfIn PDF document text
    • https://biligimanud.weebly.com/uploads/1/3/1/4/131454089/f2fdb9978.pdfIn PDF document text
    • http://xsafak.com/riduwegezuwalam3dj6.pdfIn PDF document text
    • https://kudokazapa.weebly.com/uploads/1/3/1/4/131452939/5551f7b95.pdfIn PDF document text
    • http://vivekawiga.sportsontheweb.net/3083507288.pdfIn PDF document text
    • http://igcopyrightverify.com/email_signature_photoshop_template9p5y6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://foperibonar.rf.gd/26282661513.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC783 5356 bytes
SHA-256: 0a29388234afe16c35b30d136369ab014fdf6d21f0265745bdb9dcf076d645fa
font_01_sfnt_off0000d998.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD998 10056 bytes
SHA-256: 4ead922bbaf4aa0b84e73463e00a1d27064611986969eacaf7457044a0b413d5
font_02_sfnt_off0000fc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC02 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2