Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa0858b6484c089…

MALICIOUS

PDF

111.6 KB Created: 2021-05-11 10:30:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 616075eac8638e05896178aa6c3ccb74 SHA-1: c258496d5175c840a80c671c2075721b349dc6e1 SHA-256: 6fa0858b6484c0893757f3aae7925a9b840ff8dd0cef3b31c63387d9b26fce13
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant number pointing to disposable hosting and exhibiting link farm characteristics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful content.

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://nipisod.ru/strik?utm_term=day+by+day+armageddon+audiobook PDF link annotation
    • http://table-wait.com/29635137925zy9f8.pdfIn PDF document text
    • https://cdn.sqhk.co/vedimurami/5Ojghfv/how_many_free_kick_goals_ronaldo_has.pdfIn PDF document text
    • http://nebo-baikala.ru/rixavajunenigujoguwudefy21w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386091/normal_5fed0da7a05a6.pdfIn PDF document text
    • https://cdn.sqhk.co/jilebodetifa/ijhcygg/80742097267.pdfIn PDF document text
    • http://wiboratiraveguw.mygamesonline.org/11947304622.pdfIn PDF document text
    • http://roxedizusugu.mywebcommunity.org/85783794538.pdfIn PDF document text
    • https://cdn.sqhk.co/lojibuwe/dhfSiaF/dog_balloon_artist.pdfIn PDF document text
    • https://cdn.sqhk.co/vodadavubex/hbekiiX/housecall_providers_portland_or.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/Djdhhjd/the_last_of_us_wallpaper_hd_android.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • http://healthyforczechrepublic.site/sijeserenu4mf8j.pdfIn PDF document text
    • http://pochta-24.cc/sopogidulefanamufijuzebcpdd2.pdfIn PDF document text
    • http://silkhfig.bid/jitiwibonubttv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392862/normal_6045bb4d1cf7a.pdfIn PDF document text
    • http://fufejezonodim.mywebcommunity.org/the_book_thief_chapter_13_summary.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://about-central.com/75313527200lulb7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pelebirepopo.onlinewebshop.net/mifururopapawikabu.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000178ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x178EC 5240 bytes
SHA-256: 1747920454721f0aa918abbd2c951cc5f5dbbe5c8e9f8fd4d754b837508e66fe
font_01_sfnt_off00018abe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18ABE 10668 bytes
SHA-256: 75acf274a3aa863d7740bc07269de8a075cc9009e26fd6d21fa96ffde5860e14

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