Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae909f14f5eb42a…

MALICIOUS

PDF

76.3 KB Created: 2021-03-06 06:51:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2ccc90f13a829e33929934deb1440ae4 SHA-1: 298d3690c15071a4bc14bd39a91531211936a6a2 SHA-256: eae909f14f5eb42ac3932112b77d126d62ee769c2a2ea1bb562c8697dce98f50
156 Risk Score

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 0.9997

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://jottigo.ru/strik?utm_term=50+shades+of+grey+darker+ending PDF link annotation
    • https://jajaleregonu.weebly.com/uploads/1/3/4/2/134235513/noxelikamigip.pdfIn PDF document text
    • http://it50life.pro/rofovipewukifufajozi4t5oq.pdfIn PDF document text
    • http://card2card.live/dejawugawalideol5e0.pdfIn PDF document text
    • https://vikumufum.weebly.com/uploads/1/3/1/3/131398575/guzawovisagu.pdfIn PDF document text
    • http://vejobazure.22web.org/pobifaloxiv.pdfIn PDF document text
    • https://xezatitewifesel.weebly.com/uploads/1/3/4/3/134393938/sebifuguvaju.pdfIn PDF document text
    • http://tibujodokerijer.22web.org/fotis.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tagetebaj.rf.gd/85995970293.pdfIn PDF document text
    • https://s3.amazonaws.com/feborobegibew/60147431611.pdfIn PDF document text
    • https://357b8bef-7330-4cfe-b31d-389db25c4d5a.filesusr.com/ugd/4c76bf_3fae4417eeaa449abe9f08a942920523.pdf?index=trueIn PDF document text
    • https://6cf80756-66c2-4d2e-b15d-ff1677cb7115.filesusr.com/ugd/2257e8_6aab5c4ac0de44a5abad4c869a39cc30.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/takurugilij/11222828132.pdfIn PDF document text
    • https://s3.amazonaws.com/satudifin/topology_without_tears_solutions.pdfIn PDF document text
    • https://e0220c8c-c322-4c33-af83-7c5b0fe00b66.filesusr.com/ugd/a771bd_70d63a31d036422389b0bb9600ba5f38.pdf?index=trueIn PDF document text
    • http://jefevuxivux.epizy.com/tupanalogokaw.pdfIn PDF document text
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_3ac2a48f65e3476d8e01535a5638e8fd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fukezavazuj/zowogu.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/63835213004.pdfIn PDF document text
    • https://s3.amazonaws.com/zemigiduwagafu/59339215214.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/spacex_landing_platform_names.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_off0000ead6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAD6 5476 bytes
SHA-256: 82ef3bd31dbae7ed8f666f0956182ee065e4b7bad34a6871e44693f83a08fa4e
font_01_sfnt_off0000fd7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD7C 11104 bytes
SHA-256: a928a4abd22bd650140f2fc49a674835cdba997ec976b89f8f3d5812df79357b

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