Malicious PDF — malware analysis report

Static analysis result for SHA-256 8205680cf12077ff…

MALICIOUS

PDF

82.4 KB Created: 2021-04-01 07:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 200f30d5fec56f992f582b5eb1ea5e9d SHA-1: 93f5d30acee80be6b24f13bb0c90dff7e13530c9 SHA-256: 8205680cf12077ffb4fdb8d3cee94141dd048aefd36298e875f86c9ee927a17b
134 Risk Score
Tags
free-cdn-ebook-manual-lure

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 and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 6

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://gimoguvi.ru/award?keyword=psychology+cbse+class+12+textbook+pdf PDF link annotation
    • https://sopazavevorud.weebly.com/uploads/1/3/4/3/134370644/c2aa48d8.pdfIn PDF document text
    • https://cdn.sqhk.co/pibepufas/NhhNjaU/zixifarago.pdfIn PDF document text
    • https://petugaxuw.weebly.com/uploads/1/3/5/3/135397026/wesaxusulek-fekofi-lujarox-zatoruvoga.pdfIn PDF document text
    • https://cdn.sqhk.co/bulixanejad/gfifi8D/download_microsoft_onedrive_windows_7_64_bit.pdfIn PDF document text
    • http://winoorama.space/grade_3_math_multiplication_arrays_worksheetsl6vzg.pdfIn PDF document text
    • http://finansi-7.online/metodologa_de_la_investigacin_cuantitativa_palella_y_martinsh2zri.pdfIn PDF document text
    • http://goodshopsales.xyz/office_2016_professional_plus_activatorvfoda.pdfIn PDF document text
    • https://cdn.sqhk.co/panajevem/bjegf3h/94331872130.pdfIn PDF document text
    • http://devlp.design/which_statement_or_statements_accurately_describe_a_good_way_to_avoid_excessive_service_feesdcpgk.pdfIn PDF document text
    • https://xeludelibiw.weebly.com/uploads/1/3/4/3/134371965/827834.pdfIn PDF document text
    • http://fitit.space/bingo_game_template_printablesbwkd.pdfIn PDF document text
    • http://banquepopulaire-fr.org/84162176223qw9j3.pdfIn PDF document text
    • https://goponubinolofuv.weebly.com/uploads/1/3/4/6/134695307/roropijumofu.pdfIn PDF document text
    • https://cdn.sqhk.co/zezoxomop/1xgjMgh/4258700672.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/ghc1LJf/81662968251.pdfIn PDF document text
    • http://sushibara.net/bifedom81g5.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a44479d-3246-4003-b9c8-5c513e8b16b8/nifidivelawowunovipivepa.pdfIn PDF document text
    • http://xuwabofori.epizy.com/kusejegutov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2befd9f0-bbc8-4537-8d8a-fc9110bbbcb5/sapo_y_sepo_son_amigos_descargar_gratis.pdfIn PDF document text
    • http://zasuzutan.rf.gd/netflix_movies_onto_macbook.pdfIn PDF document text
    • http://denekiwipe.rf.gd/91693037025.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d62df255-8d3a-4c0b-81f2-91648e1234a9/kitchenaid_ksm150_artisan_stand_mixer_-_almond_cream.pdfIn PDF document text
    • http://giwinilugo.epizy.com/lejabexiveke.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_off0000ffab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFAB 5880 bytes
SHA-256: ca46366184c9981158164caeef02df1ef89115896e80808846b751726e568559
font_01_sfnt_off000113c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113C6 11260 bytes
SHA-256: 5d825f8e1aa50cbc9491534c7eb7dcfd8d16e0a81753261b302cf6250dff990d

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