Malicious PDF — malware analysis report

Static analysis result for SHA-256 5446279a5efc4962…

MALICIOUS

PDF

112.9 KB Created: 2021-04-29 17:20:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: d2d56dd36a75d8e248d1d96456d7b6f8 SHA-1: 37b05183b522bb82f86a3c6090d81493e640a5a0 SHA-256: 5446279a5efc496263c51ee55d4921928580f96ead967efe8f0129afa99dd054
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9995

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/strik?utm_term=is+the+twilight+saga+on+netflix+2019 PDF link annotation
    • https://degegoza.weebly.com/uploads/1/3/0/8/130873855/b42163b7c7f.pdfIn PDF document text
    • https://vojerured.weebly.com/uploads/1/3/3/9/133999986/4ae90f.pdfIn PDF document text
    • https://wifamiwipefap.weebly.com/uploads/1/3/0/7/130738562/8163094.pdfIn PDF document text
    • https://sekitajed.weebly.com/uploads/1/3/1/3/131383533/dc2efe84c5957.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/9510525.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/fec07aa4-d68e-4ebf-86da-654fc6cab17c/29271618495.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f4ac066-2ce6-426d-babe-3e820583c4f8/xujitavix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4ead469-9ce9-4bb4-b45c-43c8fa7ee1c2/mizewijimeru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/03e9b2cd-d5ec-4a66-8f85-ffb3211dcd0b/zizijurubezujebek.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e51ee0e-d1de-4f60-866b-4f8652ad4e29/71176580625.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/venozo.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/kindle_format_converter.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/discussion_of_results_lab_report_example.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/board_of_directors_in_corporate_governance.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/satowinitimizape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/122e1184-df9c-4d7b-902e-262e4ef5e65d/what_is_code_11_on_rinnai.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e17c13b4-6787-4a8c-9ee3-a9a069887372/traductor_espaol_ingles_britanico_gratuito.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/wanepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d78c4361-41e1-455b-831f-c511012a2faa/duzabezumuzinor.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94e7bfda-6e84-4e1a-9444-a7b2c42e40a9/the_river_church_tampa_fl_youtube.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc4fa5bc-d893-453f-9a4e-c1f76be1b0e5/finefut.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b16b24e9-2823-4286-af66-32e0afa88585/48547292680.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/what_are_the_4_principles_of_gaap.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_off00017a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A36 5512 bytes
SHA-256: 4f64a0572e649de1c38e2881d215eda4f2ca99696c9df221f4ba1e528e1d415f
font_01_sfnt_off00018d19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D19 12244 bytes
SHA-256: ab406f8f4e82d8d8064413dd370bf23391b20c1daf184b52f2c7669e4b434aa8

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