Malicious PDF — malware analysis report

Static analysis result for SHA-256 5abec2a307496dfa…

MALICIOUS

PDF

86.9 KB Created: 2021-05-04 08:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: bc7d9a0b2555266c2fb894cfa4c106cd SHA-1: e81e63f4f430b579e658a0bb76d9525cb026f887 SHA-256: 5abec2a307496dfab19f1a5d99c1b49f948007ce3e2aa947f7948d27c319e3fd
186 Risk Score

Malware Insights

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

The PDF was flagged by ML and ClamAV as malicious, exhibiting characteristics of a phishing or link farm attack. It contains a significant number of external links hosted on disposable domains, suggesting an attempt to distribute malicious content or redirect users to phishing sites. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic strongly indicate this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://vilenefex.ru/strik?utm_term=hamilton+beach+toaster+oven+air+fryer+directions PDF link annotation
    • http://xarapover.mygamesonline.org/dragon_age_asunder_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/rapalaxob/iij3hjI/war_and_order_angel_troops.pdfIn PDF document text
    • https://cdn.sqhk.co/satukevaguka/ijcgfoE/texas_longhorns_college.pdfIn PDF document text
    • http://negedibomul.sportsontheweb.net/car_air_con_service_price.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483359/normal_5fffdfa8c3b14.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/igzqghP/fuvirufebirafepam.pdfIn PDF document text
    • https://cdn.sqhk.co/dajebala/9JXPji5/vedevetexudugokorofexuwa.pdfIn PDF document text
    • http://pofuxubilet.sportsontheweb.net/nationalism_in_india_by_tagore_wikipedia.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466661/normal_5fc8b03a4ef43.pdfIn PDF document text
    • https://cdn.sqhk.co/powosinubuk/UWGjbb2/snake_plant_color_fading.pdfIn PDF document text
    • https://jasoveloxera.weebly.com/uploads/1/3/5/9/135967924/vulovawemi-kejifaxivevo.pdfIn PDF document text
    • https://cdn.sqhk.co/dawupana/idgdgjO/berelanoletorutitesite.pdfIn PDF document text
    • https://madajeguruxe.weebly.com/uploads/1/3/4/3/134348767/zofavozonigis.pdfIn PDF document text
    • https://cdn.sqhk.co/jipuxoxukul/hbijjjP/tudupakajizubegedoro.pdfIn PDF document text
    • https://cdn.sqhk.co/terodekijur/Cicibgg/assistive_touch_iphone_11_pro.pdfIn PDF document text
    • https://cdn.sqhk.co/luwivimexu/jfhasie/tedugav.pdfIn PDF document text
    • https://bamigabimav.weebly.com/uploads/1/3/1/6/131636977/kevenom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_6030655e60942.pdfIn PDF document text
    • https://cdn.sqhk.co/rawegili/fiahegf/billionaire_capitalist_tycoon_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427093/normal_604db08a4f121.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mawokale.myartsonline.com/10630639692.pdfIn PDF document text
    • http://liwusetokabozil.epizy.com/77731707273.pdfIn PDF document text
    • http://madepadejatutof.onlinewebshop.net/175351651.pdfIn PDF document text
    • http://gekasudevij.epizy.com/hidden_blade_blueprints_dual_action.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_off000115cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115CD 5524 bytes
SHA-256: 5c814aca1db8a60ed98caaeff9c6c417ea39f6770f02043534c3c87acd8081bb
font_01_sfnt_off00012873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12873 10888 bytes
SHA-256: b512843bb4676a3d27a4919cb70a41b24df6a27d3cd78c6ff603a609a63ad345