Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6bf4bfa9149f76c…

MALICIOUS

PDF

73.9 KB Created: 2021-05-17 20:27:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1af10421a5f62f6c5d7d5a1dc6c06aff SHA-1: dc47f18eff57a1d9a5c91330fae4d56d304b4249 SHA-256: b6bf4bfa9149f76ca7b8ba7f2ee19d49313d8b815f2784ffab799e4eb4387d0e
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://zajinet.ru/strik?utm_term=catia+software+tutorial+pdf PDF link annotation
    • http://fineagencyy.com/wizuxokopuvoreja2m498.pdfIn PDF document text
    • http://idealicaufficiale.website/fida_movie_songs_free_download_naa_songsvh474.pdfIn PDF document text
    • http://lunatan.medianewsonline.com/xajudosokidunutidifowib.pdfIn PDF document text
    • http://vawadofofasip.getenjoyment.net/free_ielts_vocabulary_words_with_meaning.pdfIn PDF document text
    • http://shishkin-seed.xyz/60824731466eme97.pdfIn PDF document text
    • http://neletaparufo.scienceontheweb.net/52775566504.pdfIn PDF document text
    • http://lienforkid.com/physical_chemistry_for_the_life_sciences_solutions_manual_downloadn1all.pdfIn PDF document text
    • http://casbah2point0.com/63304371nk7mv.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/juzowilipi/how_to_pay_your_dish_bill.pdfIn PDF document text
    • https://fab88ded-2f12-46c9-b6ec-f290036286cc.filesusr.com/ugd/cce69c_b7fc7f8763364af4ad5447c026dd3d7b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zulezov/whirlpool_duet_ht_washer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/lokesobagidipepifusetix.pdfIn PDF document text
    • https://86a6be6f-1c3f-48a2-98e5-8a654ddc1212.filesusr.com/ugd/027f51_8e5c07af8bf048a0af8a082ee2292c53.pdf?index=trueIn PDF document text
    • https://72be5e1b-4d14-4335-96ee-88463f604c48.filesusr.com/ugd/57ecfe_caec9c6adf6941ee9b89ef34b61ab800.pdf?index=trueIn PDF document text
    • https://849cba27-c1c2-4801-a47f-514a08c45c3c.filesusr.com/ugd/7f7a2c_4870769227b94be59e4e92869011db72.pdf?index=trueIn PDF document text
    • https://25f35837-e8ad-4357-b490-8f69bec4165a.filesusr.com/ugd/96c61c_82621bd80d204f5ba3c4c1ad780aa0cd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezutu/phonak_brio_4.pdfIn PDF document text
    • https://1de4b56a-3309-4767-83a2-f1bb1ea7c594.filesusr.com/ugd/a6e5e9_ce88d6278d2b474085519e9bbf0a0e95.pdf?index=trueIn PDF document text
    • https://2703069b-a6ff-4ff9-983c-db139a8d76ba.filesusr.com/ugd/8b61cf_141e0454359e424880bc4be7e939ccb6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rumezo/danilomonopopanenarelu.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_off0000e2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A3 5032 bytes
SHA-256: e4d4fd859f1ba5e116bcf1783039165adc49513d3ebbc10a9d4d15d2b9f7fd7b
font_01_sfnt_off0000f3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E1 10760 bytes
SHA-256: 427dd59cb36bfa21317fa9412928eb4251015da8d6557ca8fcd48813ffb57178

Open this report in the interactive analyzer, or submit your own file for analysis.