Malicious PDF — malware analysis report

Static analysis result for SHA-256 adaeb3fc22410cfc…

MALICIOUS

PDF

67.3 KB Created: 2021-03-29 21:50:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: ad60d96f54d20fe6bf98eb7cafcf1750 SHA-1: 2181f775d6aa84e5d5f07ac67c9c188feb811688 SHA-256: adaeb3fc22410cfc26c2053d03528ed19ce9a06f787deced7f742af8c1137a8f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded URLs and is flagged by multiple heuristics as malicious, including ClamAV detection as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'ssp self certification form pdf'. The presence of numerous external URIs, many on disposable hosting, indicates a phishing or redirection attempt to a malicious site.

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://xezojetit.ru/award?keyword=ssp+self+certification+form+pdf PDF link annotation
    • http://sijemogezabusa.sportsontheweb.net/xipubelesodubevi.pdfIn PDF document text
    • http://rexevivejegox.scienceontheweb.net/mewumegonukopomem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479917/normal_6050c8e35cc55.pdfIn PDF document text
    • http://mekomob.getenjoyment.net/mapa_callejero_bruselas.pdfIn PDF document text
    • http://wabizuvo.iblogger.org/88937362736.pdfIn PDF document text
    • http://rawoxaxevog.mygamesonline.org/24747557200.pdfIn PDF document text
    • http://galufixagomedo.getenjoyment.net/89908341259.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459631/normal_6009c1856dca3.pdfIn PDF document text
    • http://xefawojuj.mygamesonline.org/nunopeseti.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453344/normal_5fe7848327719.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/d151b704-d260-48a5-9d40-80c9d24460b7/rokanoruzulinedalaxi.pdfIn PDF document text
    • http://tudugir.atwebpages.com/ielts_practice_test_2020.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cabeacb7-813d-436c-9f09-2cd75c2b8b07/ejemplo_de_minuta_de_una_empresa_word.pdfIn PDF document text
    • http://vajapojaperusu.myartsonline.com/suwebegi.pdfIn PDF document text
    • http://jawikiluzejibe.epizy.com/bagupaki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1655c2a1-688f-4aa9-9c7b-a65fc83ff4a0/gulipexisija.pdfIn PDF document text
    • http://xubixetumed.rf.gd/android_network_storage_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c4f9c83-0e10-4e74-af52-a69302e034fc/logo_design_app_for_android_free_download.pdfIn PDF document text
    • http://zitulogakapede.myartsonline.com/perspectiva_isometrica_ejercicios_resueltos.pdfIn PDF document text
    • http://kedisijusa.onlinewebshop.net/dozikabofinosepajizaba.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_off0000c897.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC897 5404 bytes
SHA-256: 1f4f0595344dc4b40a01ec54bfd7c8dde1b80260e5e8e9e1cde22c1ff9c5a077
font_01_sfnt_off0000dae2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAE2 10280 bytes
SHA-256: 09505d8a7c9b3d15e9041246eaeda2c1c10a8e7c0983d71ba175df1f85064846

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