Malicious PDF — malware analysis report

Static analysis result for SHA-256 069f6344ac579693…

MALICIOUS

PDF

75.0 KB Created: 2021-03-10 13:42:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: 507c20f190d67be2bcf586c0617667e1 SHA-1: 541afc3a9629e143e33b9b91b2bab1b11ee4662c SHA-256: 069f6344ac5796933f48d295fc492b38725c1f140c51d28ca88df75dc4062e9a
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic identifying it as a 'PDF_SEO_LINK_FARM'. One prominent URL, 'https://jottigo.ru/wix?keyword=guitar+zero+to+hero', is flagged as unknown reputation, suggesting a malicious intent to redirect users. The ML classifier and ClamAV detection strongly indicate malicious content, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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/wix?keyword=guitar+zero+to+hero PDF link annotation
    • https://nupurotuxi.weebly.com/uploads/1/3/4/8/134854616/8841854.pdfIn PDF document text
    • https://wubepifumemav.weebly.com/uploads/1/3/4/1/134109226/kofovabanuxev-fuwizibom-dunaj.pdfIn PDF document text
    • https://zoparidozuxeb.weebly.com/uploads/1/3/5/3/135390671/378465.pdfIn PDF document text
    • https://gakikodokuni.weebly.com/uploads/1/3/1/8/131857060/sisotebaxuzize.pdfIn PDF document text
    • https://giloxegikejuzun.weebly.com/uploads/1/3/4/7/134712531/4287532.pdfIn PDF document text
    • http://tesopinafap.22web.org/glee_taking_chances_full_performance.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/roxawo/xukirefegikowesupu.pdfIn PDF document text
    • https://064d663d-f6b2-44cf-a6ad-083da5f315e5.filesusr.com/ugd/77eba6_767d7d5b1111483bbd114e16527ef763.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizedumi/acsr_conductor_specifications.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/batuxibevijag.pdfIn PDF document text
    • http://binasizula.rf.gd/american_pie_2_movie_hdpopcorns.pdfIn PDF document text
    • https://s3.amazonaws.com/fajeloninesitel/piwapokiw.pdfIn PDF document text
    • http://judewal.rf.gd/tipibigogiwugipabize.pdfIn PDF document text
    • https://s3.amazonaws.com/ronatiduzoxij/android_file_transfer_sur_mac.pdfIn PDF document text
    • http://jegojukoge.rf.gd/fupunowibabezaboropebek.pdfIn PDF document text
    • https://08202b68-adf4-4b7d-bb06-fcebe54c78b8.filesusr.com/ugd/76dd3d_9f48fcf2486a4845bf0d02781e7b1afc.pdf?index=trueIn PDF document text
    • https://4900ecec-7ac1-411c-be2c-b077674085c8.filesusr.com/ugd/493135_6f7f07ba5d6f49fd83a15fcbd3fe5f77.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/podawakumepewez/68449211427.pdfIn PDF document text
    • https://s3.amazonaws.com/sewamos/jandy_lite2_pool_heater_price.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/patajuniw.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/13285049816.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_off0000eca4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA4 4644 bytes
SHA-256: bbe0f290de27b349bfc76ef5d426369a288193b1186ab11420a10613decd4a88
font_01_sfnt_off0000fc6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6F 10016 bytes
SHA-256: 50c2f4357dcfd238176304f90e1f43a88dd4f9b573d226667dc019028fd721ec

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