Malicious PDF — malware analysis report

Static analysis result for SHA-256 164e717c1dd9329c…

MALICIOUS

PDF

66.8 KB Created: 2021-02-24 22:31:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: f67ce25a243693ea8708df34a59c769c SHA-1: 69ca9438cf0e6394bd57e710ffa076b083fd07ef SHA-256: 164e717c1dd9329cb10e1b46f2b4d65e3a6017ea58f3336711cf0450009ca503
182 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple embedded URLs pointing to suspicious domains, flagged by heuristics as malicious redirectors and link farms. ClamAV detection and ML classification further indicate malicious intent. The presence of embedded URLs suggests the document's primary purpose is to redirect users to potentially harmful external sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8526

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/award?keyword=is+abeloth+canon In PDF document text
    • https://static.s123-cdn-static.com/uploads/4446045/normal_5ffea4b24b766.pdfIn PDF document text
    • http://stav-games.ru/mysql_workbench_6.3_tutorial8vfpg.pdfIn PDF document text
    • http://reawont.online/bolt_and_nut_torque_chart2hj5b.pdfIn PDF document text
    • https://severuzilun.weebly.com/uploads/1/3/4/7/134710190/7542191.pdfIn PDF document text
    • http://help-verification.com/jenga_code_for_angry_birds_transformers_ipad1e7kx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392193/normal_60215b9297086.pdfIn PDF document text
    • http://legendnat.space/bosifatutefizavardt2hz.pdfIn PDF document text
    • https://dapevorejux.weebly.com/uploads/1/3/4/6/134695165/vekumarakotopa.pdfIn PDF document text
    • http://luxshop21.site/campaign_finance_reports_kentuckyvd017.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483873/normal_5fde9e4e0a032.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369926/normal_60020141bee46.pdfIn PDF document text
    • https://fadusibolene.weebly.com/uploads/1/3/4/0/134042843/df45ec561ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476939/normal_5fc5bb89d6ab7.pdfIn PDF document text
    • https://zewajala.weebly.com/uploads/1/3/1/3/131398225/xuzetoloj.pdfIn PDF document text
    • http://tvoeobrazovanie.fun/conditional_wish_if_only_exercisesamdkr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/don_t_worry_video_song_punjabi.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/jomogudirawaxadizazi.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/kubernetes_cron_job_format.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/apple_free_itunes.pdfIn 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_off0000e9d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D1 4868 bytes
SHA-256: 18c449384e3c276e6582b9ffcfd5395580e5b50bdab84fda5167c4d6d6694b9c

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