Malicious PDF — malware analysis report

Static analysis result for SHA-256 1504854930a828cf…

MALICIOUS

PDF

80.2 KB Created: 2021-03-11 09:03:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8eded3655b211fb098b1525879026c3e SHA-1: d576688c31a17a47bbfc06a56d176e4bac289d3f SHA-256: 1504854930a828cfcf8e3f0171150d4bf9863412ce270ea98a1db6ebe2a057a5
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 0.9997

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://gimoguvi.ru/123?utm_term=list+worksheets+excel+2016 PDF link annotation
    • https://cdn.sqhk.co/vilubofi/HihxhiF/38587249726.pdfIn PDF document text
    • https://cdn.sqhk.co/bugininaxi/hx0WFgd/classical_piano_songs_in_c_major.pdfIn PDF document text
    • http://copyright-supporthelp.com/pasixababelitifotukaruiay9z.pdfIn PDF document text
    • http://kujazutowisut.22web.org/kalelirelejuvojikiko.pdfIn PDF document text
    • http://idealicaitaly-ufficiale.site/gramatica_de_la_lengua_espaola_onlinesy85x.pdfIn PDF document text
    • https://cdn.sqhk.co/vuvesanap/FQ8jeZz/game_theory_wikipedia_indonesia.pdfIn PDF document text
    • https://cdn.sqhk.co/natokaze/jbmhdwe/breathe_think_do_with_sesame_app.pdfIn PDF document text
    • https://cdn.sqhk.co/murajefovel/hdibCha/sikipinuleki.pdfIn PDF document text
    • http://pobijubak.iblogger.org/badger_5_garbage_disposal_leaking_water_from_bottom.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/40188e6c-58c0-449f-bbbc-0933061cdba4/onkyo_tx-nr535_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/rewepalazamiso/27715261157.pdfIn PDF document text
    • https://s3.amazonaws.com/likerajatob/naxibujaginebi.pdfIn PDF document text
    • https://7ef5d8b8-74ac-4e0a-b0a0-fa61ca6462a8.filesusr.com/ugd/23e9be_886adc452ae74b0cae2fff3dbb7dcd2f.pdf?index=trueIn PDF document text
    • https://5a11eff3-0c7a-45dd-bb89-060d4d4d2060.filesusr.com/ugd/72216b_6305b1975e9c401f975b74b18710ea7a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/free_baidu_antivirus_2019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5af7a2ae-7f49-4839-a75a-174b186d615d/what_is_the_density_of_the_unknown_liquid_mastering_physics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d197918b-0d22-4fe1-b5bc-c06b1b7e72f2/sujofox.pdfIn PDF document text
    • https://1e16f6d7-285b-4488-bf07-d3e24ac90e20.filesusr.com/ugd/417718_df720d221ece4c478d8610e7a42ccadc.pdf?index=trueIn PDF document text
    • https://944bcc21-9f45-42c2-9889-8cf837fa5d1c.filesusr.com/ugd/50f869_dcb85325f1874c60b6aa331028abaa24.pdf?index=trueIn PDF document text
    • https://aed0ee3a-d217-4696-a563-de9ff15d6c37.filesusr.com/ugd/f80e3f_fc20bbd076f0409d99c0efb57cd803da.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/32e1d693-dada-4652-910a-1ef411ca82f9/15050812709.pdfIn PDF document text
    • https://s3.amazonaws.com/filidabut/arris_tm822g_manual.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_off0000fb17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB17 5324 bytes
SHA-256: ccac233ef9cfb63e0f67e097888bec8c2fda7ee19062c5c67e5e28ddd5ba90fe
font_01_sfnt_off00010d53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D53 11348 bytes
SHA-256: f44c932a98e299208fe1c108b37664c67c47fd40c4e4e3a333b0affbcc90e539

Open this report in the interactive analyzer, or submit your own file for analysis.