Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e60d3968f8b2280…

MALICIOUS

PDF

83.0 KB Created: 2021-04-08 02:55:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e04192e9f75e86e69f7c2590e300cb8e SHA-1: 56f4564767b209befe192bafc8e2e1343ff1ff13 SHA-256: 6e60d3968f8b22804f672c3437593222db8daf809e958f9b6fc717c853db2b28
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://leonvi.ru/123?utm_term=sqlite+studio++for+mac PDF link annotation
    • http://wudenufodoroziv.scienceontheweb.net/list_of_important_days_in.pdfIn PDF document text
    • http://dizurexemubegog.mygamesonline.org/nikon_prostaff_p3_3-9x40_non-illuminated_bdc_rifle_scope.pdfIn PDF document text
    • http://bawimip.sportsontheweb.net/awas_yojana_list_2020.pdfIn PDF document text
    • http://sovuradema.medianewsonline.com/mafukakejigigezisorot.pdfIn PDF document text
    • http://lilubaxubaxulu.sportsontheweb.net/15367748806.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/metakibeme/rigejenogejodanefamazexig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38e42cdb-8f6a-4833-b305-5f869abd48b9/xemalukawasuxikaw.pdfIn PDF document text
    • https://s3.amazonaws.com/lorerexeg/74154903887.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe16946f-27f1-49a4-a547-5871cf493e89/ripozibimatedej.pdfIn PDF document text
    • https://s3.amazonaws.com/rekawexuretowo/cumulative_frequency_distribution.pdfIn PDF document text
    • https://s3.amazonaws.com/gowupuzokowuxes/volvo_xc90_owners_manual_2007.pdfIn PDF document text
    • https://s3.amazonaws.com/zuguvoxoki/what_are_the_goals_of_punishment_sentencing.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/lg_24lb451b_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mixanaz/57180559641.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5497d849-d651-40b0-ac98-0cf75cdf9efe/52722044815.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6143f53a-64fe-41d5-a5dc-e6d6c9eef4e4/rezowidovunogivaro.pdfIn PDF document text
    • https://6bb2b61b-82bf-473b-8365-63ddb02ddbdd.filesusr.com/ugd/d55797_adec7db4f99542f1b3db8c62e581c8d2.pdf?index=trueIn PDF document text
    • https://eb72eaa1-ef55-40a3-a653-f6d21bccf295.filesusr.com/ugd/54913d_05856c032c724f0e84013445d6bf7db3.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b403f3d8-dbf7-4d16-b9e8-d1dee2427a60/jepudaruvogovamewisidu.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/what_fuel_does_a_5.7_hemi_use.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/learning_tableau_10_packt.pdfIn PDF document text
    • https://s3.amazonaws.com/vososasoxumete/transformers_alternators_sideswipe.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDCF 5396 bytes
SHA-256: d833ccc0be0a611acb352577a3432e69d7f590255ea5e93d2e4aa93e452fd8b1
font_01_sfnt_off00010011.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10011 11812 bytes
SHA-256: f5e8f102b1d7f10610575a907e23f8de54ed19211da6e1cc4a7d45e4b84d9031
font_02_sfnt_off00012898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12898 16352 bytes
SHA-256: 9cb0650af5bdb2e8593988a361a40fe1030b61ea25d8fce7fab67310e0b1f9a7

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