Malicious PDF — malware analysis report

Static analysis result for SHA-256 5df292fdfb2187a8…

MALICIOUS

PDF

68.0 KB Created: 2021-02-16 12:20:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: bfdc5f44c90c821882aab131374897a6 SHA-1: 34972b65f28f5b3e5f508109e17a1970c6fe4e94 SHA-256: 5df292fdfb2187a89e0c113f930cce79f237469d15cb8189924465b0c7218e83
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a link farm designed for SEO manipulation. One of the primary external URIs, 'https://maypoin.ru/strik?utm_term=philips+wake-up+light+hf3520', suggests a lure related to product searches. The presence of multiple unknown URLs and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent, likely for phishing or malware distribution.

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://maypoin.ru/strik?utm_term=philips+wake-up+light+hf3520 PDF link annotation
    • http://sethel.xyz/answers_definition_synonymuhlfo.pdfIn PDF document text
    • http://limons.space/free_download_visual_basic_tutorialogaoe.pdfIn PDF document text
    • https://zonidazoledod.weebly.com/uploads/1/3/1/0/131070441/tujadotag-dopomebapimo-miwinido.pdfIn PDF document text
    • http://hookup157.site/psp_emulator_rom_games_free4hspn.pdfIn PDF document text
    • https://wokusozevopiwaj.weebly.com/uploads/1/3/4/3/134381386/2b8aaa7.pdfIn PDF document text
    • http://avtoshtorki.shop/home_republic_chambray_cotton_sheetscgwz5.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/miwolezedubujoz/bima_howala_palu_kanda_dj_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/walmart_pilots_crowdsourced_grocery_delivery_platform.pdfIn PDF document text
    • http://wisubiko.rf.gd/maye_teri_chunariya_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/forma_arcaica_significado.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/20408492778.pdfIn PDF document text
    • http://zewedazogiwake.rf.gd/op._gg_euw.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/giradewonenur.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_off0000c8d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8D9 5820 bytes
SHA-256: 79b49161a39cc53789629115be573434207f3c63f3218f8a657d552935780df8
font_01_sfnt_off0000dcd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCD2 11632 bytes
SHA-256: 65c1c6d443b64c5a9d60bcbae9aeef8670ff032449cd965d59ad11f4181cb141

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