Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bd6aa59cce17746…

MALICIOUS

PDF

75.9 KB Created: 2021-03-19 05:34:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b63e2786b8a51013dcfd08969ca807b7 SHA-1: 4f02b571fd5a4f13bb68674acef3aa7dc0a355cf SHA-256: 0bd6aa59cce17746b5d4498fad2861b376967780c20ac3bf89ee489699f816ad
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://xezojetit.ru/strik?utm_term=class+dojo+student+login+page PDF link annotation
    • http://zonisazi.22web.org/tumobesavewevesogivomisa.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/xonaxevetaf/57891379557.pdfIn PDF document text
    • http://dekefolujif.epizy.com/60050965724.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/dsc_pc1616_programming_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a18d0bd-60ff-4f63-a041-b8624ec1b308/what_does_maus_mean_in_german.pdfIn PDF document text
    • http://xupubuxasaf.epizy.com/rabagorelunopad.pdfIn PDF document text
    • http://muvalinifotu.rf.gd/vuejs_functional_components_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5a96d1b-e2cf-4d7d-99f1-504102d1b476/united_colors_of_benetton_hot_perfume_price_philippines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f7302f8-22bb-452c-b891-942e1a15c947/how_to_fix_vitamix_container.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe11a111-400e-4ab1-ab79-71eb358244cb/womunapizujuz.pdfIn PDF document text
    • https://s3.amazonaws.com/kodipopujufipig/apache_http_server_for_windows.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993e0884-8a4d-4c7e-9ae3-f01deda07efd/kisapixawutirujukevirobi.pdfIn PDF document text
    • http://rebivik.epizy.com/imaginarium_mountain_rock_train_table_assembly.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/buckley_school_uniforms_cork.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fef5f6a3-6dc8-4890-8598-c9614b73a8b9/bases_purinas_que_son.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/85837191365.pdfIn PDF document text
    • https://s3.amazonaws.com/xeropizuwe/powipurejolugokur.pdfIn PDF document text
    • http://niwerujegip.epizy.com/46805310727.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5a4ba1f0-7e1b-4ef3-952c-4269563a1a86/notobifodasoza.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60a31b77-8c0a-4b15-b44e-2724884c5fdd/25422399628.pdfIn PDF document text
    • https://s3.amazonaws.com/rurovikejigibu/rewuvurokatu.pdfIn PDF document text
    • http://daxokefi.epizy.com/82596197728.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_off0000eb87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB87 5012 bytes
SHA-256: 372cd9e5996a38ef9341ba36a6927786155474921fe022c02117add83b369c64
font_01_sfnt_off0000fcab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCAB 11056 bytes
SHA-256: 38bd7032aa6255a96d77df3262e2b1a80859d609fe23f2fa430d773467b1082e

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