Malicious PDF — malware analysis report

Static analysis result for SHA-256 7005260b0bc4449c…

MALICIOUS

PDF

77.1 KB Created: 2021-03-27 23:31:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 75390d7e50e5f58e9788ebcf413a6efe SHA-1: c1066b008b767f68f6a85199e1a04e347e7280e2 SHA-256: 7005260b0bc4449c58ecdfab272c0115d4433bdcb40dba56c03e493f230fd8af
194 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable domains, indicative of a link farm or phishing lure. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially for malware distribution or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://midufefew.ru/award?keyword=bandura+et+al+pdf PDF link annotation
    • https://cdn.sqhk.co/rabetejorazi/gdHibwq/satofutinagimasuxag.pdfIn PDF document text
    • http://swiss-gear.shop/vutow5k0ph.pdfIn PDF document text
    • https://givepatodanino.weebly.com/uploads/1/3/6/0/136097232/5c421d7a08.pdfIn PDF document text
    • https://wokiliga.weebly.com/uploads/1/3/0/8/130814475/4358662.pdfIn PDF document text
    • https://mabunamu.weebly.com/uploads/1/3/4/9/134902385/bepalizaditofenele.pdfIn PDF document text
    • http://nadahul.ru/16313526659mpnao.pdfIn PDF document text
    • http://setokanekema.mygamesonline.org/48366307672.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/jVmVMzG/cg_vyapam_set_online_form_2019.pdfIn PDF document text
    • https://teselabobebivu.weebly.com/uploads/1/3/1/6/131606188/18a4a42b1bda2f.pdfIn PDF document text
    • https://kirugalepolofaw.weebly.com/uploads/1/3/4/3/134340862/nikon_dufufulaxukinir_pimibakojat.pdfIn PDF document text
    • http://rofuxipof.mywebcommunity.org/how_to_setup_hp_deskjet_3050a.pdfIn PDF document text
    • https://sekikeke.weebly.com/uploads/1/3/4/7/134739811/jidukisazitemezigu.pdfIn PDF document text
    • https://cdn.sqhk.co/tebolugex/jeTPic8/dufola.pdfIn PDF document text
    • https://fofebufog.weebly.com/uploads/1/3/4/7/134738758/1552001.pdfIn PDF document text
    • https://rubuxunixo.weebly.com/uploads/1/3/4/5/134518382/tubirujuperetotalol.pdfIn PDF document text
    • https://zumusikibalagop.weebly.com/uploads/1/3/4/0/134096359/f74d5881121f.pdfIn PDF document text
    • http://lojasamericanasbr.com/242834335884ym7q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/piradi/film_budget_template_google_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/lekelepowo/adjetivos_irregulares_en_ingles.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/crazy_zombie_6._0.pdfIn PDF document text
    • https://s3.amazonaws.com/xojafemori/zozugadotezex.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_off0000e44e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE44E 4908 bytes
SHA-256: b038a5bc435669e944591ad319002bfc2fe79cc1d7710e6ddb622792de24c651
font_01_sfnt_off0000f50b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF50B 2652 bytes
SHA-256: 5837df439a59c13e7e158dc60b48c69a8858f75a0239f86201080df02807f9c1
font_02_sfnt_off0001009c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009C 10844 bytes
SHA-256: 98cac988d55332d7a5d0dbc34d4966414e1c9452819b60b14aaab4b4513dcd76