Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec1edb4f606b7de8…

MALICIOUS

PDF

153.5 KB Created: 2021-05-31 22:53:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 02284bc3879da3b7eda987e0f711dd88 SHA-1: 1f9eaa350320fe3f204aa320b7a57e19d6515c64 SHA-256: ec1edb4f606b7de8023e3fad5d78064bad693e3b11683def75366926a2dd3045
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating it is likely a phishing or trojan delivery mechanism. It contains a large number of embedded URLs, many pointing to disposable or unknown-reputation domains, suggesting a link farm designed to redirect users to malicious content. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of an attempt to exploit users through malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://golowaki.ru/123?utm_term=icao+annex+15+aeronautical+information+services PDF link annotation
    • https://bipesulevawitod.weebly.com/uploads/1/3/1/4/131437914/9541617.pdfIn PDF document text
    • https://fiwimojulo.weebly.com/uploads/1/3/4/5/134525916/33773bdeb36aa.pdfIn PDF document text
    • https://varusimutajol.weebly.com/uploads/1/3/4/5/134502614/6344f.pdfIn PDF document text
    • https://kekugijofer.weebly.com/uploads/1/3/5/3/135321092/5266447.pdfIn PDF document text
    • https://rilitovewub.weebly.com/uploads/1/3/4/0/134095842/9d6c7.pdfIn PDF document text
    • https://wovugijewinekox.weebly.com/uploads/1/3/0/7/130739614/nesulekunuma.pdfIn PDF document text
    • https://robiwadanojiso.weebly.com/uploads/1/3/4/6/134644007/10b91eab42c.pdfIn PDF document text
    • https://sadibagisu.weebly.com/uploads/1/3/4/7/134758630/titajiw-kepuxijef-sekoke-lilakuna.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kufujibumufa.pbworks.com/f/how_to_lose_weight_on_starch_solution.pdfIn PDF document text
    • http://pupowivala.pbworks.com/f/lord_murugan_songs_mp3_download_tamil_masstamilan.pdfIn PDF document text
    • http://xuruzinijub.pbworks.com/f/lolozatojopanirapitanar.pdfIn PDF document text
    • http://jajafad.pbworks.com/w/file/fetch/144417534/gre_physics_practice_test_with_solutions.pdfIn PDF document text
    • http://lekipirunezi.pbworks.com/f/61176828898.pdfIn PDF document text
    • http://sewafebi.pbworks.com/w/file/fetch/144424086/33844305011.pdfIn PDF document text
    • http://wuwazilizos.pbworks.com/f/automatic_transmission_troubleshooting.pdfIn PDF document text
    • http://nusuwoxub.pbworks.com/f/how_to_hack_someone_cash_app_without_human_verification.pdfIn PDF document text
    • http://sejuworepow.pbworks.com/w/file/fetch/144418665/58265098320.pdfIn PDF document text
    • http://zelovoguvunu.pbworks.com/f/bilegarexowilapewota.pdfIn PDF document text
    • http://xedidovetaw.pbworks.com/f/34747599122.pdfIn PDF document text
    • http://wuvebag.pbworks.com/w/file/fetch/144425310/28155121230.pdfIn PDF document text
    • http://masawumel.pbworks.com/w/file/fetch/144420207/najemitokopakaxizogej.pdfIn PDF document text
    • http://mudowomuxexo.pbworks.com/w/file/fetch/144424533/arabic_calligraphy_fonts_free_download_for_inpage.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_off00021ff7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x21FF7 5268 bytes
SHA-256: b6878f850ba09bc653895b4419f14fef857e766a514ad4d91b1fefecb3343d11
font_01_sfnt_off000231e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x231E6 11136 bytes
SHA-256: a0c79d68e64692b1acc3ff307e1b282dc80f0d54c0bab953492c2b6902459fe8

Open this report in the interactive analyzer, or submit your own file for analysis.