Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecd7f78983686a7f…

MALICIOUS

PDF

63.3 KB Created: 2021-03-22 13:32:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e41afabeb8b57707c44d9454ba265f5a SHA-1: 2d83953746c8d541615902e2a761de70db30ee09 SHA-256: ecd7f78983686a7fadcf1a366cdc96cb6147b867dbed81d3660c06ef8d42bd09
124 Risk Score

Malware Insights

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

The PDF file contains numerous external URLs, many of which are hosted on disposable domains and appear to be part of a link farm designed to redirect users. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a non-clustered link farm on disposable hosting, and the presence of 'utm_term' parameters suggests a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9702

Heuristics 4

  • 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
  • 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://gimoguvi.ru/strik?utm_term=kx+155+installation+manual PDF link annotation
    • http://copyright-security-ig.com/7738825852974068.pdfIn PDF document text
    • http://imm-shoes2.club/suxelofilulux1y8uh.pdfIn PDF document text
    • https://silavetej.weebly.com/uploads/1/3/5/3/135314504/banugolemukugorame.pdfIn PDF document text
    • http://lngcliente.com/family_photography_posing_guideiz8gg.pdfIn PDF document text
    • http://sagunutu.medianewsonline.com/65711622636.pdfIn PDF document text
    • http://taher-tcac.com/synthesis_of_copper_iodide_lab_reportz710a.pdfIn PDF document text
    • http://kaxavetaxudu.mywebcommunity.org/22999693420.pdfIn PDF document text
    • http://virivuluk.getenjoyment.net/alternating_current_vs_direct_current.pdfIn PDF document text
    • http://kijekidajefi.getenjoyment.net/cebu_pacific_boarding_pass.pdfIn PDF document text
    • http://tipofeliluget.medianewsonline.com/quantitative_value_investing_strategy.pdfIn PDF document text
    • https://tuwavufubuxa.weebly.com/uploads/1/3/3/9/133997694/6027678.pdfIn PDF document text
    • http://stylecurtains.com/25147100934298kk.pdfIn PDF document text
    • http://kexolifowuj.medianewsonline.com/44267723212.pdfIn PDF document text
    • http://raifaisentgo.online/49614037660ixrxz.pdfIn PDF document text
    • http://1xbets-reg.site/garmin_2699_battery0gnqf.pdfIn PDF document text
    • http://xufelaketodo.getenjoyment.net/penewokagagaxizevigedaz.pdfIn PDF document text
    • http://afracheat3.xyz/12419536214lzfeo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wadoromutisagar.myartsonline.com/58168550453.pdfIn PDF document text
    • https://4f6c49ad-35c2-4e1b-a50e-a4ca4816ee30.filesusr.com/ugd/a28dad_5bb790b8f5fe4458a308a7cb1b348189.pdf?index=trueIn PDF document text
    • http://xufoziminep.onlinewebshop.net/bethena_scott_joplin.pdfIn PDF document text
    • https://a40b6db0-1679-4e03-879f-ac5827b9aa7d.filesusr.com/ugd/dba42a_8dada1e1b70f44d9b2c320b10a23fa23.pdf?index=trueIn PDF document text
    • https://ac09d6fb-20d1-47e2-97cb-2568fc137cdf.filesusr.com/ugd/03dcd4_bca7cf20d5bb46c591c84c8bd2d28b8b.pdf?index=trueIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d2d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2D6 4948 bytes
SHA-256: 082a0b84a8f8a3a51ad145cebc37b1ea74da17b2999d02ee124283a7495179ad

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