Malicious PDF — malware analysis report

Static analysis result for SHA-256 462b480789c220a1…

MALICIOUS

PDF

77.6 KB Created: 2021-03-10 01:45:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c787c98b8e4fad2c9e911978f33ee245 SHA-1: 0975434e28a940596c6163bb33ba7810619b80d9 SHA-256: 462b480789c220a1f0d47c8ade75127bcee2bee6c411b58b12a438dfb256c0a1
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9993

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 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://jottigo.ru/strik?utm_term=where+to+place+tens+unit+pads+for+neck+and+shoulder+pain PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413583/normal_60317109beee6.pdfIn PDF document text
    • https://cdn.sqhk.co/vofaruvukuk/jXgd0E7/50439833846.pdfIn PDF document text
    • http://technodom11.com/fanuvuf5vdg9.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/6gjJhbq/gofaligevujubixusufunuje.pdfIn PDF document text
    • http://kinokaiff.space/adda247_current_affairs_in_hindi_downloadobnwv.pdfIn PDF document text
    • http://helps-lnstagramcopyrights-about.com/89792462533vaaub.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/zib10b7/26139604707.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418399/normal_5fe61fb7d8852.pdfIn PDF document text
    • https://cdn.sqhk.co/dinigivo/cJbxcJp/4252080813.pdfIn PDF document text
    • http://jesibijifinuz.mywebcommunity.org/ayatul_kursi_in_english.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408712/normal_602ad3010db28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450907/normal_601dff98ca165.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415951/normal_602111dc2c2b3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kuwitabetegipo.myartsonline.com/angry_birds_coloring_sheets_to_print.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c78cd0a-5c8f-4d77-9d56-b59b1a3c2240/lamefokin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13749f0d-9baa-42df-b846-bb586258c175/emerson_32_lcd_tv_lc320em2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22d1a34b-bad7-4426-b154-f231513a907d/how_to_fix_printhead_hp_8620.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/77351336400.pdfIn PDF document text
    • https://s3.amazonaws.com/baritexovopa/accelerometer_data_format.pdfIn PDF document text
    • https://s3.amazonaws.com/gofiguj/shopify_edit_blog_template.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/49416038847.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/baburao_comedy_audio.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2716286-3422-4ce8-9950-551bc6284126/94680710294.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_off0000f324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF324 5320 bytes
SHA-256: 4d7acb46022a607f829d593cf7b0818928cd22dd8a2f299af68f29968b0ca9c1
font_01_sfnt_off00010543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10543 10356 bytes
SHA-256: 25476b7b76e8c5c5f37590ad21ef375701f3babbdbe0b5dcb33218b0b218e582

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