Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed1a2e85e6c34216…

MALICIOUS

PDF

77.2 KB Created: 2021-06-07 00:50:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92256591f35b217feff1817a84cab6b3 SHA-1: bd5db219ca7c9147768d3688572688c7e05dce78 SHA-256: ed1a2e85e6c342164dfa63b2362e12eb9f4b3018cc8b0c5d1c81823b4be4cee8
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, indicative of a link farm or phishing lure, with one URL specifically mentioning 'songs download'. ClamAV detected the file as 'Pdf.Phishing.Trojan', and ML classification strongly suggests malicious intent. The presence of embedded links and the overall structure point towards an attempt to redirect users to malicious sites for further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://inwebjor.ru/pbw?utm_term=bommarillu+songs+download+sensongs
    • https://xojisige.weebly.com/uploads/1/3/1/6/131637148/1352025.pdf
    • https://vizakadaji.weebly.com/uploads/1/3/4/4/134491897/bitewepovokubag-pixuxaj-tefofisegi-tagajokuwab.pdf
    • https://wasexakenisopi.weebly.com/uploads/1/3/5/9/135982815/f193d8.pdf
    • https://bujefodamefizup.weebly.com/uploads/1/3/1/0/131070612/tipemonezar_weveboravapivud_wodijege_rowubajapozopa.pdf
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/86c65e471.pdf
    • https://kepegefamoza.weebly.com/uploads/1/3/1/3/131398453/womubalopejok.pdf
    • https://wukodotimage.weebly.com/uploads/1/3/4/4/134487216/6156237.pdf
    • https://vozokeku.weebly.com/uploads/1/3/1/8/131857213/guxilu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2c6d4c9d-7c99-41ca-a1b4-a6b57d577491/conditional_probability_worksheet_with_solutions.pdf
    • https://uploads.strikinglycdn.com/files/2f38cb62-5d89-407a-8a6f-ae5713ab3a74/que_es_bosquejo_historico.pdf
    • http://vadobadud.pbworks.com/w/file/fetch/144611424/bhagavad_gita_in_english_audio.pdf
    • https://uploads.strikinglycdn.com/files/566ad550-f022-4509-bb6d-3ca8e24c1eba/manual_alesis_3630_compressor_espaol.pdf
    • https://uploads.strikinglycdn.com/files/00655a87-0e01-46a0-b085-eef2b341eaf1/22927732447.pdf
    • https://uploads.strikinglycdn.com/files/5c96a183-8b0a-42b1-84bd-26b54a8fc631/sketchup_2015_app_download.pdf
    • https://uploads.strikinglycdn.com/files/15cec83f-ebc7-4f83-8e61-43c8bc7f762d/mulirizunipozenafuxu.pdf
    • http://minuwaxiper.pbworks.com/f/zureris.pdf
    • http://zizovitunex.pbworks.com/w/file/fetch/144644043/tom_and_jerry_the_fast_and_the_furry_2005_vhs.pdf
    • https://uploads.strikinglycdn.com/files/ca4f086b-36bd-4556-8ff4-1244f79c6ef9/81558619380.pdf
    • http://gaguseka.pbworks.com/w/file/fetch/144673509/54880541938.pdf
    • http://tukufidanega.pbworks.com/f/can_power_of_attorney_transfer_car_title.pdf
    • http://ruwezebom.pbworks.com/f/why_does_my_comcast_cable_box_keep_blinking.pdf
    • http://panuduxeruv.pbworks.com/f/kopudirapabesojederajodu.pdf
    • http://najajadux.pbworks.com/f/onde_fazer_a_carteira_de_trabalho.pdf
    • https://uploads.strikinglycdn.com/files/097f6b65-5605-4cca-8da4-5d74c3ee858a/judurojegokadasupomuku.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_off0000f072.bin
442304d0b011ae444f556fc26cf426a839ce44fbbca2c6a9b2c786a129a679e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF072 5288 bytes
font_01_sfnt_off0001025d.bin
ea20c73ebcb36dcec348a2cf61181496091fb52b531c0db310028bea55c367aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1025D 10708 bytes

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