Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d2e1020282d751e…

MALICIOUS

PDF

110.4 KB Created: 2021-03-28 10:46:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b69b0297b0a0bb9f3fc2896ec839754c SHA-1: 9f4d4b1686bc4e1e7b2380d6ab4124a5d6aa1a44 SHA-256: 8d2e1020282d751e235b52794fa413b66b9a9dcf0c8877c9fb9a5e2ee32e9e55
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 0.9995

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://resalured.ru/wix?keyword=tara+maclay+comics PDF link annotation
    • http://gelufose.scienceontheweb.net/warapazutonesajobirupoto.pdfIn PDF document text
    • http://formblckr1.xyz/lirr_hicksville_to_penn_station_priceoxdo7.pdfIn PDF document text
    • http://bukanugizini.mygamesonline.org/design_patterns_in_vb._net.pdfIn PDF document text
    • http://italywow.pro/gotapikituwosoluboxc9n9g.pdfIn PDF document text
    • https://bolowarokarov.weebly.com/uploads/1/3/4/3/134349384/wibonufisezomet_vigora_xomonuj_tawob.pdfIn PDF document text
    • https://vuxorewuv.weebly.com/uploads/1/3/4/8/134861163/1989140.pdfIn PDF document text
    • http://tafakiduwav.scienceontheweb.net/evinrude_25_hp_outboard_fuel_mixture.pdfIn PDF document text
    • http://euroshopme.site/conflict_in_hamletnpfve.pdfIn PDF document text
    • https://pewugitunuwirex.weebly.com/uploads/1/3/4/3/134373176/zilowowitevu.pdfIn PDF document text
    • http://zujewubowufonug.scienceontheweb.net/xemuz.pdfIn PDF document text
    • http://jirusulixozome.scienceontheweb.net/79378060746.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://1b53f64c-3596-40ff-86ea-95cec8902569.filesusr.com/ugd/838e7e_08575cfe70214a3b9c28b2463b6faf19.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fibesezati/new_moon_book_release_date.pdfIn PDF document text
    • https://550dfcec-0280-4316-a0d5-68b74a7a20b9.filesusr.com/ugd/f59309_10ca7504edec48f2b13995e1648b3e6d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tomaxade/reading_calendar_worksheets_for_grade_1.pdfIn PDF document text
    • https://394fded3-a37f-45fe-8092-07e0884d2d31.filesusr.com/ugd/bdbc91_7905f48101964f6eadf441a76130f01d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/jatelaxanejeposadotavi.pdfIn PDF document text
    • https://s3.amazonaws.com/minabiwa/13192174663.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/artifactory_artifact_url.pdfIn PDF document text
    • https://s3.amazonaws.com/lomiwexuva/93550014748.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/hoover_windtunnel_vacuum_reviews.pdfIn PDF document text
    • https://4bf641bf-117a-4913-931f-55e49063997f.filesusr.com/ugd/5befcb_27717e8adf1443a281d161fa04699910.pdf?index=trueIn PDF document text
    • https://4779f2f8-a33e-4327-9c78-21ee0bcf4620.filesusr.com/ugd/31bf02_f828cde3a99645668776a2c96bced6b0.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000173b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173B6 4996 bytes
SHA-256: fe4e2706c931bc0185856ff30871c8a64aea2cda01fc4d6d856c60e6eab704fe
font_01_sfnt_off000184a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x184A5 11732 bytes
SHA-256: d1086a7872586f7ea8399cd7dafa4b357786c61c1d9447458ff52462764a8cef

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