Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c51da6774514da…

MALICIOUS

PDF

76.1 KB Created: 2021-02-27 15:53:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: 74240534b74b7505fac316920831c723 SHA-1: 7d0b4cc1b6659ede1fee39a6cc20fb6883bbe81c SHA-256: 95c51da6774514dabac25db4103c00af04793ffd43c80e876e1a3bf078e4f86e
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or redirection mechanism. The document body, though partially corrupted, includes a title related to 'mind body therapist', likely a lure to entice users to click on the embedded malicious links.

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://vilenefex.ru/strik?utm_term=how+to+become+a+mind+body+therapist PDF link annotation
    • http://moviesaddaa.online/904557966243p428.pdfIn PDF document text
    • http://segway-wheelchair.ru/utility_software2crpt.pdfIn PDF document text
    • http://giwapozolaleg.mypressonline.com/faputet.pdfIn PDF document text
    • https://cdn.sqhk.co/xanodujijefu/AE0yPhh/castle_after_the_storm_review_guardian.pdfIn PDF document text
    • http://sokuzise.iblogger.org/84198403305.pdfIn PDF document text
    • http://snegny.com/35436033027ii3yi.pdfIn PDF document text
    • http://kozlo.space/waterlooworks_interview_relief_formhd6cd.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/lowrance_hook_3x_dsi_review.pdfIn PDF document text
    • http://savadaqwe.space/28364529184058ul.pdfIn PDF document text
    • http://herss.space/xemujuwijksnk8.pdfIn PDF document text
    • http://dayzcommunity.info/jifarijelukukokoxopiwemuxi92y.pdfIn PDF document text
    • http://medicalpracticementor.com/bikogozakuruwevesoga3vj6c.pdfIn PDF document text
    • http://ca-manalapan.space/zafow29vn2.pdfIn PDF document text
    • https://cdn.sqhk.co/redusebi/bia2mIR/zumuxobi.pdfIn PDF document text
    • http://kirivil.iblogger.org/74017625504.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/cIbijgj/craftmaster_custom_pools_33411.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/bionaire_humidifier_clean_filter.pdfIn PDF document text
    • http://tulajadulixo.myartsonline.com/5566734486.pdfIn PDF document text
    • http://jokosen.atwebpages.com/pet_rocks_1970s_for_sale.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_off0000ec91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC91 5576 bytes
SHA-256: 4f62e39fe27907e4dd4bcfd5857539cb9bdbcee75dd7ad176c767c4de100014d
font_01_sfnt_off0000ff62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF62 10524 bytes
SHA-256: cf5b2d0556564d89aa02d875026df44c4bbc7231531f92da4c231daaf7f6c581

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