Malicious PDF — malware analysis report

Static analysis result for SHA-256 808716249cf5253b…

MALICIOUS

PDF

103.6 KB Created: 2021-03-18 03:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: f9cee675db33bf96a84194c464c4b7d2 SHA-1: 748371beb994240b88a87aaf66fbb303b138ffd4 SHA-256: 808716249cf5253ba19a3a3f6988bd8f576e702be8184a87f96ea43b6a809070
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain ('lozipotod.ru') that is likely used for phishing or distributing further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to malicious sites, aligning with spearphishing tactics.

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://lozipotod.ru/award?keyword=ceremony+book+pdf PDF link annotation
    • https://cdn.sqhk.co/fekawitaxug/Jt8Lfig/steampunk_movies_on_hulu.pdfIn PDF document text
    • http://sportita.fun/28071066419iq4wk.pdfIn PDF document text
    • https://cdn.sqhk.co/rasepotobami/jcifheg/fepixigurobeditimitu.pdfIn PDF document text
    • http://naturfresh.space/vitowofagomikekovisuwovel4u6z.pdfIn PDF document text
    • http://wixujepigok.22web.org/41282717605.pdfIn PDF document text
    • https://cdn.sqhk.co/noneniwetav/gfggeQs/ice_rage_hockey_mod_apk_revdl.pdfIn PDF document text
    • http://likododolokopaj.iblogger.org/verbos_uniformes_biformes_e_triformes_em_ingles.pdfIn PDF document text
    • http://pearhaidhr.fun/robot_vacuum_cleaner_reviews_australiaxjhis.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/vuzufexarevima/significado_de_tecnologia_de_punta_en_informatica.pdfIn PDF document text
    • https://71347f20-8353-4153-bebc-dd2a28b3a5cf.filesusr.com/ugd/a382ee_aebaf603d9214622b039a745f001f599.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/reporte_del_clima_manizales_colombia.pdfIn PDF document text
    • http://xavobuwog.epizy.com/wowimifonim.pdfIn PDF document text
    • https://a5fc3680-5c08-4cda-bd6c-abaa3bdf25bc.filesusr.com/ugd/ea5d7b_30dbfe4b347a4a1888bea3086bff214f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jewizopukuni/jiwusopuloti.pdfIn PDF document text
    • https://656adf98-7a81-40bd-8d0f-2b9c27d09201.filesusr.com/ugd/268ab1_19bce66e737a4e67a7d8a46ebb9e20eb.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/libusamagowuvo/mango_man_size_guide_jeans.pdfIn PDF document text
    • https://ca108e69-7b6b-43f0-8f16-d96ebeb8a33d.filesusr.com/ugd/79e0dc_2e9f50f29b094739b8d38e4e85afa894.pdf?index=trueIn PDF document text
    • https://0633afab-057d-4448-85e1-ac1a97571725.filesusr.com/ugd/66920c_da3a55f3bdcd4c3d896dc329e37b93ce.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rorives/lijutimobazabalidumalisu.pdfIn PDF document text
    • https://1639490a-f715-481e-9fb1-af38d332269b.filesusr.com/ugd/a59130_17cd5aeea1b2418186faf61832f52d18.pdf?index=trueIn PDF document text
    • http://nufitexevav.rf.gd/camscanner_pro_paid_apk_free.pdfIn PDF document text
    • https://4b4ea461-5266-411b-8735-d5290551f550.filesusr.com/ugd/7fedcf_01f4b3de84614710ac7067eeebd42613.pdf?index=trueIn PDF document text
    • https://3745348a-78a0-42d7-8ff4-af2b45bf5faf.filesusr.com/ugd/02631b_c028197c15e547718f6b1e8b14f2d4d3.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015956.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15956 4976 bytes
SHA-256: f7d1b2a4bbfe7d946b6165b90037657299d2ca9bacef59a04a2f3859723725e8
font_01_sfnt_off00016a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A34 11704 bytes
SHA-256: 374aed37321f23eb9d507dd545a56588fbd23cffa3f678ab9bd9e123495332f6

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