Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ee92dceee6d106c…

MALICIOUS

PDF

78.0 KB Created: 2021-03-23 02:24:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b57066e44f3914f663aff2c2a521e948 SHA-1: 11213daf079b91580aa8bdd473189d0a93cb72f5 SHA-256: 2ee92dceee6d106cda9ed6f90f535b0676c46974d5e4aecceee21eef9b861079
186 Risk Score

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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 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.
  • 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.
  • 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://seumenha.ru/wix?keyword=lawrence+ks+police+department+arrests PDF link annotation
    • https://cdn.sqhk.co/surodamiz/FijZjbt/royal_family_dance_crew_members_2015.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/hbhdoT9/dude_perfect_hunting_stereotypes_bloopers.pdfIn PDF document text
    • https://cdn.sqhk.co/fuludasowipu/hghhoig/photo_transfer_software_mac.pdfIn PDF document text
    • https://cdn.sqhk.co/zolaxadivowe/jh34ihP/pac_man_ghost_light_amazon.pdfIn PDF document text
    • http://jaligovaw.iblogger.org/jack_and_the_beanstalk_storyboard_pictures.pdfIn PDF document text
    • https://cdn.sqhk.co/vikojovowoso/gjWgfoP/blundstone_boots_womens_used.pdfIn PDF document text
    • https://cdn.sqhk.co/xubuguxovim/gg0kqF4/faxogu.pdfIn PDF document text
    • https://cdn.sqhk.co/sileluzorupo/G2Vifib/89671302334.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/dZTgiPh/toolbox_talks_construction_osha.pdfIn PDF document text
    • https://cdn.sqhk.co/pixisuja/7dSihev/zig_zag_road_lines.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/iihhef5/96373328558.pdfIn PDF document text
    • https://cdn.sqhk.co/bafesugoguwi/nNhiNje/stickman_five_nights_survival_2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://21c505bb-01ca-4817-a549-4ed1ebba5040.filesusr.com/ugd/7d7105_96e9f64f7cba47f1a790e22849d386e0.pdf?index=trueIn PDF document text
    • http://dutebowoxaj.rf.gd/clash_of_clans_base_app_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd504807-d857-4ebe-bedd-ca8457fb94b2/zosulovodel.pdfIn PDF document text
    • http://lesiterifok.epizy.com/media_er_baidu_browser_not_working.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b99bc2-8221-4d0c-bda5-6fa6044b23f6/tipos_de_grficos_excel_2010.pdfIn PDF document text
    • http://vonimamodiji.rf.gd/ge_7fa._03_fact_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c9ce28-dcc8-426d-85ab-cfba25f184c8/what_makes_it_newsworthy.pdfIn PDF document text
    • https://a49ec80b-b4e3-4dac-84ed-d687b6aff6a5.filesusr.com/ugd/46d696_8804352977f24145a1cc4316f2d84786.pdf?index=trueIn PDF document text
    • http://kololujes.rf.gd/advanced_javascript_tutorial_with_examples.pdfIn PDF document text
    • https://27a83426-c768-4525-a63d-b5b732cca755.filesusr.com/ugd/28b3f7_c8fe7966f87b4a94af4740d07dd40707.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/21a07a15-a0bc-432c-9fe9-2ef4a0cfc185/order_of_operations_with_whole_numbers_and_exponents_basic_calculator.pdfIn PDF document text
    • https://81da36f4-dec6-4bf4-836b-19ed67500659.filesusr.com/ugd/5fd5c1_b1a9e138b89e4f3b8eb6966d10f1e4d4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7b5ca16-3979-49fd-9483-3bad2f4ef236/2011_skyjack_3219_for_sale.pdfIn PDF document text
    • https://e1eccfe9-8888-4f52-a155-e9c8e84e0752.filesusr.com/ugd/4fb05f_3e348b4351014abd84a68581aee439ba.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_off0000ee86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE86 5316 bytes
SHA-256: 20aeafa70d8c2ca45e1385fba35dc172cd8de4655ac1d28f89ecb1d08f6ab99e
font_01_sfnt_off0001009e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009E 12764 bytes
SHA-256: 69ddb377272edf6e1747aa06227f92a5bf7de7888ae7d5901f12af7b24e84d40