Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce23003708400015…

MALICIOUS

PDF

78.0 KB Created: 2021-03-27 22:31:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 668d17ae96f6810667c3815c2177c842 SHA-1: 97bd02fcb289f03500de64de680461c55bb52d88 SHA-256: ce23003708400015b067daab3d53a8d1532fadd24ba3b8ecdcc1c19922d66b5e
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 0.9992

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://dugedepap.ru/aws?utm_term=what+is+first+alert+brk PDF link annotation
    • http://nunokitatamipo.22web.org/57651465742.pdfIn PDF document text
    • http://dufujadexofizun.22web.org/michael_grant_tv_tropes.pdfIn PDF document text
    • http://dupadevoz.22web.org/95741231025.pdfIn PDF document text
    • https://cdn.sqhk.co/xeduwukaxusa/CribjgU/23791307178.pdfIn PDF document text
    • https://cdn.sqhk.co/razanifuwuz/aVjjhji/lebara_top_up_spain.pdfIn PDF document text
    • https://cdn.sqhk.co/gowamojon/DihD2gi/luperasedajizaru.pdfIn PDF document text
    • https://cdn.sqhk.co/vibebexez/xQJiigd/lufazajitubuzi.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/tigovatolis/conference_program_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/negonanopix/integrator_and_differentiator_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/jipowumat/biology_class_9.pdfIn PDF document text
    • http://kofukev.rf.gd/what_is_the_average_weight_of_a_navy_seal.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/fisajup.pdfIn PDF document text
    • https://010f2e21-25ca-4560-806d-08cbbb7c7db1.filesusr.com/ugd/74a852_ae6b31a82d4145968c671cbf74114540.pdf?index=trueIn PDF document text
    • http://potopaf.epizy.com/bhojpuri_hot_dj_music.pdfIn PDF document text
    • https://3926d074-74ab-41cc-aa9d-340192ccda4e.filesusr.com/ugd/5619e7_9b004d6e79e7456b863e0b76f3dd39c3.pdf?index=trueIn PDF document text
    • http://ribezewipuzez.epizy.com/dusk_till_dawn_piano_ringtone.pdfIn PDF document text
    • https://26c1613e-5d28-4fa3-89cb-3d2c9ab59faf.filesusr.com/ugd/fe83c3_4a2f33aef45445789e238d2ad880b262.pdf?index=trueIn PDF document text
    • http://topazipimobol.epizy.com/resumen_de_la_obra_la_metamorfosis_de_franz_kafka.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/audacity_for_mac_air.pdfIn PDF document text
    • https://s3.amazonaws.com/vuforewebub/9484397371.pdfIn PDF document text
    • https://ac614e2c-2e00-43e4-a80f-2c6bce9fb64b.filesusr.com/ugd/f103bb_8131c4e53af340f783f09b0d1fafcf74.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xuxifuzituwu/72539548237.pdfIn PDF document text
    • https://s3.amazonaws.com/mogedozara/comcast_report_outage_phone_number.pdfIn PDF document text
    • https://4c5ad993-366d-4b3a-aa99-9b6f56583180.filesusr.com/ugd/01e791_d12632b393b140419395136fbaae2980.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f2ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AD 5072 bytes
SHA-256: fe5114d9ef70a4042e910ef2bb59708ee07dfb08070b9387f724ce4672bedaf8
font_01_sfnt_off000103f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103F8 11264 bytes
SHA-256: 77ea4f1e51bdc0e90c0bcb9898e09aa302d92cfc7a1793671123dfc8b6c9aac9

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