Malicious PDF — malware analysis report

Static analysis result for SHA-256 4eae63241c390b30…

MALICIOUS

PDF

68.3 KB Created: 2021-03-14 22:15:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 8e66577dd106e7faec03e6c41535e81d SHA-1: 084dd2e84daccac5b171e34013dd79448d5f8bbd SHA-256: 4eae63241c390b3004e5bb37cbd5f7486d5763af450c042b7a6745d832cb9128
126 Risk Score

Malware Insights

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

This PDF document contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The document's structure and embedded links suggest it is designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://dugedepap.ru/strik?utm_term=liftmaster+professional+1%252F2+hp PDF link annotation
    • http://xevanaz.iblogger.org/61187371464.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443815/normal_5ffa047d5fc0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452206/normal_600dd00da2483.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491445/normal_603fd882c3f5c.pdfIn PDF document text
    • http://gusitolife.iblogger.org/biperideno_bula.pdfIn PDF document text
    • http://zemawage.22web.org/prognosis_dermatitis_atopik.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417659/normal_5fde95a2d6cd9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369514/normal_604324b5d57d9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_a053bd2a6f804595b416d346f4f757d4.pdf?index=trueIn PDF document text
    • http://vawojemi.epizy.com/92780140141.pdfIn PDF document text
    • https://ed4d48c2-14ea-47f5-a89a-b82193587323.filesusr.com/ugd/8ce377_55a1bbb5814d4301a146cca3a7249b85.pdf?index=trueIn PDF document text
    • http://mepizegavipin.rf.gd/rozolufepom.pdfIn PDF document text
    • http://zewomasajeguzud.epizy.com/an_occurrence_at_owl_creek_bridge_answer_key.pdfIn PDF document text
    • https://9f53eded-325d-4e02-8430-7c09bd872488.filesusr.com/ugd/e04405_4bcdb4a6da594a6fbb721cc702f8ac3c.pdf?index=trueIn PDF document text
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_ca1908aa6e01429eafc28bab8fb90893.pdf?index=trueIn PDF document text
    • https://4f0754e2-f0c4-47db-826b-83042027646c.filesusr.com/ugd/7a11b0_752aceda77d2485cbaca2bcd1e005641.pdf?index=trueIn PDF document text
    • https://f238abdf-92e3-4651-90df-65b6e8a648d9.filesusr.com/ugd/99965f_3e289e2297ff40b8b4a11158dfae78a2.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/informacion_sobre_la_bandera_de_honduras.pdfIn PDF document text
    • https://s3.amazonaws.com/perurulexi/fitunajojipinoselekife.pdfIn PDF document text
    • http://xusavax.epizy.com/78427746962.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/diludupaverow.pdfIn PDF document text
    • https://s3.amazonaws.com/pubopelej/degimojelosabewebas.pdfIn PDF document text
    • https://02796127-04ec-4c85-b270-c6f7310ebb18.filesusr.com/ugd/ce0e6d_a30cb767ff98471991fe824a39732e88.pdf?index=trueIn PDF document text
    • http://mafasegu.epizy.com/video_player_app_for_java.pdfIn PDF document text
    • http://davojuke.epizy.com/59484575686.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_off0000cfc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC3 5300 bytes
SHA-256: 4db75cb2e542845b4aeb4de9ab1cf143c49fb13f8db5c62c41f8f9f6085253ed
font_01_sfnt_off0000e1ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AB 10052 bytes
SHA-256: 2e14e1e505b6b5541dbe54c4985fa15b527d4dab96ffa7ab7fa84dc7dee8bf79