Malicious PDF — malware analysis report

Static analysis result for SHA-256 3448e7a343d37536…

MALICIOUS

PDF

64.5 KB Created: 2021-03-18 15:44:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: fa586c4a594dbf2b9304d9cab8268d29 SHA-1: 0f7912c6a42d07645a03686b173ec2b1549c049e SHA-256: 3448e7a343d3753648b0479d61ef28c09a1932e13d5b835c006897bf5b4a9bb9
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan payload. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The primary URL, dugedepap.ru, is likely part of this redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7136

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 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
  • 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://dugedepap.ru/strik?utm_term=what+is+the+true+meaning+of+christmas+in+the+bible PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390074/normal_600639c28cde4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455196/normal_5fc6d8f6ba577.pdfIn PDF document text
    • https://cdn.sqhk.co/jifedibodo/2ejfQmg/lakers_world_champions_2020_shirt.pdfIn PDF document text
    • https://vunatoja.weebly.com/uploads/1/3/0/7/130738644/9bedc61.pdfIn PDF document text
    • https://cdn.sqhk.co/polidupokasu/Hj3Ruje/celestial_pearl_danio_for_sale_australia.pdfIn PDF document text
    • https://bovuzujavus.weebly.com/uploads/1/3/5/3/135326818/4915828.pdfIn PDF document text
    • http://vizionsmc.net/feminist_theory_books_to_readarcxv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475863/normal_602a1eded94d3.pdfIn PDF document text
    • https://cdn.sqhk.co/zixedagiro/jKtBhgR/23034500775.pdfIn PDF document text
    • https://cdn.sqhk.co/xenotami/1ibtFmn/dino_dash_game.pdfIn PDF document text
    • http://sarkife.site/aambala_video_song_starmusiqg1w50.pdfIn PDF document text
    • https://cdn.sqhk.co/rugofufol/hNScLgc/75851490748.pdfIn PDF document text
    • https://gunuxaruta.weebly.com/uploads/1/3/4/5/134588955/6794696.pdfIn PDF document text
    • http://pumba.fun/xunitenipugafena1thty.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379230/normal_6034d8ed3fd4c.pdfIn PDF document text
    • https://cdn.sqhk.co/fopavege/Mgd9igP/algebra_and_trigonometry_8th_edition_free.pdfIn PDF document text
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/perakote_fetusada.pdfIn PDF document text
    • https://cdn.sqhk.co/pananumujo/jbjb0jb/aptoide_apk_free_onto_laptop.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/wukevirenesu/critical_thinking_book_1_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/top_blog_templates_wordpress.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/fishing_report_colorado_river.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/change_background_color_android_textview.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/27265017105.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f4b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4B6 5448 bytes
SHA-256: a1995d441f062ae98b89ff8ac218ccb96933090be2e267a910dbd3effba20364

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