Malicious PDF — malware analysis report

Static analysis result for SHA-256 58ce634a46ab2c85…

MALICIOUS

PDF

83.8 KB Created: 2021-03-14 10:18:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: a7cfe3510b1fa8794860764163a209d7 SHA-1: 936d1e7b0fc745ee179aca5d89d3049e0b187df8 SHA-256: 58ce634a46ab2c854bee8fa5b88b27e1311058798fe5fa2ae16d6bba581096e5
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/strik?utm_term=harry+potter+5th+movie+length PDF link annotation
    • http://kigirifaduguv.getenjoyment.net/baby_girl_names_that_start_with_cl.pdfIn PDF document text
    • http://tumbochka.space/84157126912nlok5.pdfIn PDF document text
    • http://getsol.xyz/773586859299wnsf.pdfIn PDF document text
    • http://itdiscount.info/lisiraropewunuzr5ep.pdfIn PDF document text
    • http://italy-small.space/xosinonelipujoxudulywmgp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_602bf33bd7bf0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482631/normal_6000a72c70333.pdfIn PDF document text
    • http://itravelgr.com/fruit_smoothie_recipes_with_milk_no_yogurtmm17q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376088/normal_602987dc753d2.pdfIn PDF document text
    • http://tabikola.online/mothers_day_inspirational_quotes_from_husband5bi6k.pdfIn PDF document text
    • http://lnstagramcentre.net/longman_dictionary_of_contemporary_english_apk_free_download37hr0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366961/normal_5fcb4a60374a4.pdfIn PDF document text
    • http://bumufirila.mygamesonline.org/notudefegifoketoba.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/dalurubolevusaf3ck1d.pdfIn PDF document text
    • http://baffer-shop.space/mississippi_drivers_license_renewal1yap9.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/litunux/toxuzilok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01007018-3f0a-4a75-88a2-7ace22b72c21/iron_kingdoms_character_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/43e7371a-9d37-4f37-94fb-ce1dea31f6ee/67714573447.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63975963-f8a1-45cf-a55a-92a19d2fb6fc/63097760043.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5cd42c-92b3-4b5f-ab4e-1ccf86dc2210/62997271687.pdfIn PDF document text
    • https://s3.amazonaws.com/babuxufarizuxur/avancemos_3_workbook_answers_page_151.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_off00010a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A97 5304 bytes
SHA-256: bdb772019c406de03174be41eaeb975d910a08449093d3e300bb7ce5c901f0bb
font_01_sfnt_off00011c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C88 11088 bytes
SHA-256: 0fa332d45ec873ac14f63332b5c701fec919d2549617bb991d7295e58e7b7d30

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