Malicious PDF — malware analysis report

Static analysis result for SHA-256 6055c25d8f76e51f…

MALICIOUS

PDF

74.1 KB Created: 2021-03-23 22:46:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1be37a3dcc4d6c339c61e1b8fa70fc74 SHA-1: cd3c67eda2bac6e8e073ff21311a2956a82b0c7d SHA-256: 6055c25d8f76e51fb972906f5081a5d5cbfc9e06a51f1b518e4f0ba1f276296e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple external URLs, with one directly linked to a 'marketing plan example powerpoint' lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://druttle.ru/strik?utm_term=marketing+plan+example+powerpoint PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366311/normal_601bbaa77bcea.pdfIn PDF document text
    • http://kesisofawa.mygamesonline.org/is_hyperbaric_oxygen_therapy_good_for_asthma.pdfIn PDF document text
    • http://sparzha.club/literatura_del_renacimiento_espaol_autores_y_obrasi6iw0.pdfIn PDF document text
    • https://cdn.sqhk.co/womafafowix/adUyigF/loyalty_card_template_online.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/h4gdnjf/listen_children_s_nursery_rhymes_online_free.pdfIn PDF document text
    • http://teachost.com/background_wallpaper_adobe_photoshop_7._0_downloadcbtl9.pdfIn PDF document text
    • http://sivelural.mygamesonline.org/bazamupanuferojosito.pdfIn PDF document text
    • http://jepegupunu.mygamesonline.org/brunner_and_suddarth_3rd_edition.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373997/normal_603064809b108.pdfIn PDF document text
    • https://cdn.sqhk.co/rowunozimop/6jf0gi6/64294187448.pdfIn PDF document text
    • http://bofarutavuxeli.iblogger.org/the_giver_chapter_6_summary_sparknotes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_60511cba2e98d.pdfIn PDF document text
    • http://eferevole.com/60869383648wfu06.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/fofeguj/integral_calculus_arc_length_sample_problems.pdfIn PDF document text
    • http://pixafur.atwebpages.com/how_many_calories_are_in_a_plain_bagel_with_butter.pdfIn PDF document text
    • http://bosurigazo.epizy.com/rexovuvozakigenogabeg.pdfIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/sidiwi.pdfIn PDF document text
    • http://jumawivowibeb.onlinewebshop.net/petsafe_dog_collar_not_working.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_off0000e6c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C3 5188 bytes
SHA-256: 2b2f0825aba07b905c78f380bd236122751576b8c7783ffd44d11b5ffd3b9af4
font_01_sfnt_off0000f87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87B 10352 bytes
SHA-256: d6b72470374e95cf608a265d8955f3190f0ee5997eb48aba379fdcda84afc693

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