Malicious PDF — malware analysis report

Static analysis result for SHA-256 86b993d4ee9ef05c…

MALICIOUS

PDF

66.7 KB Created: 2021-03-03 15:18:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: db2adaa5f65ddeb3066aa68890b2d6bc SHA-1: bb757e723735a7a7401753a2055a3ac4d47c193d SHA-256: 86b993d4ee9ef05c450d6ac51a625c420cb21ef12e095c2564a6183692a5923f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains multiple embedded URLs, with one specifically identified as a lure for a 'Predator 2000 generator harbor freight coupon'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/strik?utm_term=predator+2000+generator+harbor+freight+coupon PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4470226/normal_603b9a30596ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384318/normal_60257d69d5788.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/oXhiAhi/geo_book_3_charger.pdfIn PDF document text
    • http://tradebot.space/70175534289sbqoi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373776/normal_60089916224e1.pdfIn PDF document text
    • http://cmbespaceclient.xyz/lutizajinoxivoloxejorigbi7si.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448116/normal_6036d5e08f90e.pdfIn PDF document text
    • https://cdn.sqhk.co/samigimas/7jahg20/lemon_pound_cake_recipe_ina_garten.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385876/normal_6022b1296abd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480884/normal_601f14cea260c.pdfIn PDF document text
    • http://rumurel.mywebcommunity.org/audio_driver_for_windows_10_64-bit_-_lenovo_g580.pdfIn PDF document text
    • http://1eyvgo.xyz/how_to_use_adjective_in_spanish1u0mx.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ruvaseravijuged.rf.gd/19381478193.pdfIn PDF document text
    • http://vufefedutuja.epizy.com/momoko.pdfIn PDF document text
    • http://gisatazab.rf.gd/nevemodixukobe.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC52A 5620 bytes
SHA-256: 3093dcccf8375f32bfef18be3d3d2739eefb773498af37c30dee3b03161263b0
font_01_sfnt_off0000d844.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD844 11004 bytes
SHA-256: 7eaa1b5f1fdac117fa593e506cdfd10a443fd2d77885020d2a62384dc5553bf0

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