Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a19ef2d8f08966…

MALICIOUS

PDF

78.5 KB Created: 2021-03-04 09:02:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: ab6ba94e4880b3c3f00460b691278f0c SHA-1: 335f6915e1249219e261e1cda57e2511f12fabaa SHA-256: 09a19ef2d8f0896629b8b36bc302c59733ba78e3a7c5e738ced57cad3ccf366f
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users. The document body, though heavily obfuscated, appears to be a lure related to appliance repair. The presence of ClamAV detection and ML flagging further supports its malicious nature, likely as a phishing or redirection tool.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/strik?utm_term=how+to+fix+5e+error+on+samsung+washing+machine PDF link annotation
    • https://laximazerafa.weebly.com/uploads/1/3/4/2/134235816/nedex.pdfIn PDF document text
    • https://tonavibete.weebly.com/uploads/1/3/4/7/134748981/xatola.pdfIn PDF document text
    • http://veselutut.mywebcommunity.org/que_establece_la_ley_de_ohm.pdfIn PDF document text
    • http://bitcoins-profits.com/where_can_i_donate_used_toys_and_books_near_me0faz7.pdfIn PDF document text
    • http://zutatowatipo.mywebcommunity.org/shark_steam_mop_not_turning_on.pdfIn PDF document text
    • http://lebojabufi.medianewsonline.com/rijibav.pdfIn PDF document text
    • https://wofofubuw.weebly.com/uploads/1/3/2/7/132710679/6408424.pdfIn PDF document text
    • https://genezekanoz.weebly.com/uploads/1/3/1/4/131413678/jakiforujipix.pdfIn PDF document text
    • https://gofuzuxelizexo.weebly.com/uploads/1/3/5/3/135391542/77cab5c340f.pdfIn PDF document text
    • https://zexuboru.weebly.com/uploads/1/3/2/6/132683252/8857144.pdfIn PDF document text
    • https://zisamezasebav.weebly.com/uploads/1/3/3/9/133997726/1372193.pdfIn PDF document text
    • https://bawilawuvibowe.weebly.com/uploads/1/3/4/4/134401702/3804585.pdfIn PDF document text
    • https://toroborelap.weebly.com/uploads/1/3/4/8/134867907/jaximude-maneba.pdfIn PDF document text
    • https://rawubewo.weebly.com/uploads/1/3/1/4/131405976/nobitujevuxoxu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://davofunup.onlinewebshop.net/71693944303.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_off0000f668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF668 5508 bytes
SHA-256: e3c4d3e53a4e25e9f110c4d20da8121374c21c1722ef32bc683b546e9d2faa0a
font_01_sfnt_off00010919.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10919 10472 bytes
SHA-256: 64ee833a084405bf77f038908637a35d66bc6a9fed199e4af99763d1c4559e2a

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