Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e9374bb15c61f05…

MALICIOUS

PDF

79.4 KB Created: 2021-05-31 18:48:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e05a3b33bec60457ace2070a4bf1c368 SHA-1: 2f2bd84a4e772e572e399115c3343ddaa6fbd076 SHA-256: 9e9374bb15c61f0516ac40dc014f129aa95ff30fc1fa3240236bc0db19adcdf9
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating high maliciousness. The PDF contains a large number of external links, identified as a 'PDF link farm', with the primary malicious URL being https://pixomot.ru/pbw. This suggests the document is designed to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pixomot.ru/pbw?utm_term=tomorrow+is+here+today+lyrics
    • https://linepofikoleku.weebly.com/uploads/1/3/4/4/134492010/kotogafov.pdf
    • https://kexiwiwimibip.weebly.com/uploads/1/3/1/3/131379584/kedanurisixe.pdf
    • https://kikuramem.weebly.com/uploads/1/3/2/7/132740701/9694662.pdf
    • https://duparumiwope.weebly.com/uploads/1/3/4/7/134707207/b003c2593.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/85815e62-b85b-4231-a997-0d0391d8d108/visomira.pdf
    • http://lugozamuxika.pbworks.com/w/file/fetch/144419112/rilaz.pdf
    • https://uploads.strikinglycdn.com/files/ace35e62-54fd-4e0a-90ce-904193a65f36/modelo_de_plan_de_negocio_ejemplos.pdf
    • https://uploads.strikinglycdn.com/files/4a679bff-d782-4d22-bb25-78b02c2dd5b5/sibiz.pdf
    • http://visetululiv.pbworks.com/w/file/fetch/144415332/2019_dodge_challenger_hellcat_redeye_hp.pdf
    • http://kolasotosexu.pbworks.com/w/file/fetch/144414348/isc_computer_science_class_11_book.pdf
    • http://xovelezid.pbworks.com/w/file/fetch/144413979/arapa_klavye_indirmek_istiyorum.pdf
    • https://uploads.strikinglycdn.com/files/fa4da2d3-1b30-46b0-86a0-60f7013a5bd2/how_to_open_a_shisa_nyama_business.pdf
    • http://lugozamuxika.pbworks.com/f/what_type_of_stress_causes_rock_layers_to_fold.pdf
    • https://uploads.strikinglycdn.com/files/b5ff217b-a18f-403b-8067-39d6010909b0/35368619423.pdf
    • https://uploads.strikinglycdn.com/files/95345783-aa3b-47ba-818b-03f6bb132981/sozemumevizepoju.pdf
    • https://uploads.strikinglycdn.com/files/ba9ecc9c-f77b-43e8-844b-c376a25d607d/metal_gear_solid_v_quiet_location.pdf
    • https://uploads.strikinglycdn.com/files/e3aa7abe-19c9-43ca-bf4f-8f6e86afc8c5/pedodegopunikatapimi.pdf
    • https://uploads.strikinglycdn.com/files/bbd61476-e14d-4573-b6e0-aeb153c212e6/como_sair_do_modo_demo_em_tablet_acer.pdf
    • https://uploads.strikinglycdn.com/files/cc519dc6-d5a1-4122-9839-5d82d8188e9c/12276055745.pdf
    • http://wuranosa.pbworks.com/w/file/fetch/144416781/cheat_crystal_marvel_future_fight.pdf
    • https://uploads.strikinglycdn.com/files/a82535cc-e8d6-4e2f-b42f-8bcfdf711fab/fallout_4_mods_pc_download.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa97.bin
9b28b0ef114b39ab88d5fcecebefdaefa1175abf779a29586dc959abda388f4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA97 5324 bytes
font_01_sfnt_off00010c95.bin
b75b4a719ba44cb86f92f0f3d0e56801dd20c27e35e482a2a048ba1499902ace		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10C95 10872 bytes

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