Malicious PDF — malware analysis report

Static analysis result for SHA-256 b667453e62a88571…

MALICIOUS

PDF

78.4 KB Created: 2021-03-31 01:47:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 02f713f8dbc134289d27981b6e785aca SHA-1: b65f61e79598289703e354335646d7e03ed9d0f7 SHA-256: b667453e62a8857171f9c97eb22ab1696c21d9f62c3634bf715bb4982ed01cfa
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to 'xajibur.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'Camp half blood minecraft server', suggesting a lure to attract users to the malicious link.

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://xajibur.ru/wix?keyword=camp+half+blood+minecraft+server PDF link annotation
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • http://pevelumi.22web.org/wovusizilixazimow.pdfIn PDF document text
    • http://ionatr.space/65994744818zs2ps.pdfIn PDF document text
    • http://form-copyrightservices.com/direct_speech_worksheets_for_grade_78sh12.pdfIn PDF document text
    • http://gojawufeki.getenjoyment.net/pamumumiriloriluwajapekum.pdfIn PDF document text
    • http://verifiedbadge-lnstagram.com/84087241879sdmjm.pdfIn PDF document text
    • http://cabinetsop.xyz/jikodewara6409h.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://85377554-d84f-42a6-a955-c87f7d5d3d8c.filesusr.com/ugd/dd4472_58f3b7167a824f9096386f557591b5bb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/606440a0-5d2f-4850-ac28-24b5f526a0b3/jvc_kd-x50bt_bluetooth_problems.pdfIn PDF document text
    • http://tosabukevosubar.myartsonline.com/baxefumegeforalos.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/autotype_exposure_calculator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98a75d57-382f-44dd-a036-b2bebd544a6f/english_speaking_classes_in_noida_sec_12.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/latovunexira.pdfIn PDF document text
    • https://s3.amazonaws.com/pogolo/jufirososubipor.pdfIn PDF document text
    • https://f270a619-8d23-4dc9-95fa-a4320df4b75e.filesusr.com/ugd/7bd364_54486e704c2c46cdae4e04c81c8a1b20.pdf?index=trueIn PDF document text
    • https://203e7bc3-08d7-4ecc-a8df-f797e0d4a079.filesusr.com/ugd/d4579c_86203657f1ce4bcdb2d5be5b1674fc13.pdf?index=trueIn PDF document text
    • http://repuvamiperubo.epizy.com/60848927068.pdfIn PDF document text
    • https://198d5876-2e36-4a54-a59d-b4c1060b65be.filesusr.com/ugd/4733ca_ae5d4dd458cd47f48d8683ed1e461f78.pdf?index=trueIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e29b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29B 5408 bytes
SHA-256: 94e37bfb78c9337e2f17512ce9f3c664ed4e7f7f1c1710fab137bd174adf8f43
font_01_sfnt_off0000f4d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D8 11732 bytes
SHA-256: 4d098317142a1a6051fbffaec4767502c4448cca0cb14a8d45e301db45e9c902
font_02_sfnt_off00011cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CF4 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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