Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b70fb698311eafc…

MALICIOUS

PDF

71.7 KB Created: 2021-03-19 11:53:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5784631d6251ca3cb75fdc43856f64a1 SHA-1: 73122a80a94f349dbf203d8b29f6f6b9604b8f62 SHA-256: 4b70fb698311eafc5e317482f000fd17ee3a4f52a5c3596a28b9cf103bb41d17
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by heuristics as a link farm and by a machine learning model as malicious. ClamAV also detected it as a phishing trojan. The presence of external URIs and the link farm heuristic suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/wix?keyword=blue+harbor+auto PDF link annotation
    • http://feyakast.online/93767338815vd3pg.pdfIn PDF document text
    • http://miiliioner.xyz/510517272036tphm.pdfIn PDF document text
    • http://healthyforczechrepublic.site/why_my_furnace_blowing_cold_air27y34.pdfIn PDF document text
    • http://pc-remont.website/god_chasers_quotestbuoy.pdfIn PDF document text
    • http://mscredit.info/music_downloader_free_mp3_downloadfqkni.pdfIn PDF document text
    • http://xudogiborijum.66ghz.com/40605260489.pdfIn PDF document text
    • http://openplafond.xyz/tutepatagabogobonomiva51941.pdfIn PDF document text
    • http://all-host.site/93388421254nbzsu.pdfIn PDF document text
    • http://organicsss.space/18305624015j2mhe.pdfIn PDF document text
    • http://zanartcc.net/regegilomdx3w.pdfIn PDF document text
    • http://tersq.fun/351994746321ie9j.pdfIn PDF document text
    • http://on-arenas.com/naxigexepumuloxuvadazexx2rf.pdfIn PDF document text
    • http://ketosimple.online/reported_speech_in_spanish_exercisescjik9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://5c839259-519f-4cee-a1a2-6639d654070b.filesusr.com/ugd/140efa_28f8f31cc0634669b5bc576c01898519.pdf?index=trueIn PDF document text
    • http://zidarebuna.epizy.com/17466362358.pdfIn PDF document text
    • http://gowasikokini.epizy.com/can_you_read_books_on_kindle_paperwhite.pdfIn PDF document text
    • http://tixinova.rf.gd/animal_jam_play_wild_windows.pdfIn PDF document text
    • http://jasagola.epizy.com/72501083051.pdfIn PDF document text
    • http://sukeboragepude.epizy.com/xowewebobufixojenut.pdfIn PDF document text
    • https://a3720f92-bdaa-4449-a3ff-14f36884d2d5.filesusr.com/ugd/afadc3_88a164e363f94e00b4ab15bf94ea7d82.pdf?index=trueIn PDF document text
    • http://mumizoxagoguros.rf.gd/c_template_where_multiple_classes.pdfIn PDF document text
    • http://mapodivopabo.rf.gd/m_audio_keystation_88_review.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_off0000dd6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD6B 4784 bytes
SHA-256: b1b571e1de3888b6b6837d599c4c10f9fad5d2165db46a7c90de6f790886c21b
font_01_sfnt_off0000eda5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDA5 10576 bytes
SHA-256: eba8e7456ce477ac97245ff0f5d59ba2ae929767248299ef7dfaf998c2d5d845

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