Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ea4436c449487b8…

MALICIOUS

PDF

70.3 KB Created: 2021-01-21 16:35:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: fb1014cd8fb5666003b9c1b3381c0a14 SHA-1: 08aae1d4cd726d6b53af9baf327546c76682fb66 SHA-256: 6ea4436c449487b83318e2c3f9da831af97d36823554a9be3cc18760d365ff2d
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 external URIs, many hosted on disposable domains or link farms, indicating a phishing or redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to phishing sites or download further malware. Although no scripts were explicitly extracted, the PDF structure and URI patterns are consistent with malicious PDF lures.

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://traffnew.ru/123?utm_term=short+answer+questions+pdf PDF link annotation
    • https://fuwefepitebu.weebly.com/uploads/1/3/4/7/134709748/duremasejub-bidilidoka-boxepevezak-kunepupisiwelij.pdfIn PDF document text
    • https://wisemidotoveto.weebly.com/uploads/1/3/4/3/134349295/c5104a.pdfIn PDF document text
    • https://juzudibat.weebly.com/uploads/1/3/4/3/134328144/4e6b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450347/normal_5fdd94cb69c47.pdfIn PDF document text
    • https://luboguti.weebly.com/uploads/1/3/0/7/130739177/098ec746e053.pdfIn PDF document text
    • https://site-1197523.mozfiles.com/files/1197523/flashlight_song_70s.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413120/normal_5feb17c1d536b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445104/normal_5fdfdffc667fa.pdfIn PDF document text
    • https://site-1247196.mozfiles.com/files/1247196/2018-_19_calendar_template_excel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495846/normal_5fba02d21d289.pdfIn PDF document text
    • http://nazevulilabume.66ghz.com/72036157571.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fujesotes.epizy.com/boyarsky_java.pdfIn PDF document text
    • http://dezoruxeg.epizy.com/gadik.pdfIn PDF document text
    • http://vibulowivez.epizy.com/sasubufunuvawezeve.pdfIn PDF document text
    • http://siwodonodefofo.epizy.com/mj5_audition_song.pdfIn PDF document text
    • http://lelekon.epizy.com/shakti_chakra_hd_images.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_off0000d517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD517 5416 bytes
SHA-256: 9a48721795971598ea2adf84c96cc7c3d33cdc4cbc431efeed69cf00fad2d5b1
font_01_sfnt_off0000e78e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE78E 10408 bytes
SHA-256: 73f09aa7c2fa71fe046af67e00a8aa2424078de5cf8e6e73213034659f6bbd93

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