Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e7e74bef6371fb2…

MALICIOUS

PDF

81.3 KB Created: 2021-03-19 13:16:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 6dd5a4d18d82ce351bb4545720ccdf42 SHA-1: 9b27b27d3fdea4c33fe077d0d79191d811e9dec6 SHA-256: 0e7e74bef6371fb24d82e6772cc13ffbdcf88cd57d4d7a2c1fee7e27b52de71c
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 0.9992

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://bologen.ru/wix?keyword=longview+kilgore+cable+channel+guide PDF link annotation
    • https://folutiniku.weebly.com/uploads/1/3/1/8/131871586/e185706.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/watch_jack_reacher_2016_movie_online.pdfIn PDF document text
    • http://gobigs.space/mountains_and_basins_landforms_in_texas3rjms.pdfIn PDF document text
    • http://jirenaxapibetig.scienceontheweb.net/whats_the_best_free_drawing_app_for_ipad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391899/normal_5fd7a2a3c2559.pdfIn PDF document text
    • https://vigekajabaka.weebly.com/uploads/1/3/4/7/134708837/jefajamobatuv.pdfIn PDF document text
    • http://flowerport.store/wonafusafavafatot58ar6.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/2011_chevy_equinox_owners_manual.pdfIn PDF document text
    • http://wildber.store/207018557126bue1.pdfIn PDF document text
    • http://theraisins.pro/braun_exactemp_blinking_lightxm7l2.pdfIn PDF document text
    • http://activa-fb.com/angle_addition_postulate_worksheetu6zj7.pdfIn PDF document text
    • http://metalllift.ru/guxidanositacmrtk.pdfIn PDF document text
    • https://pokekuxabinupar.weebly.com/uploads/1/3/4/0/134016783/jakofewij_rirudisogogute_winijapavawezuw_lixelupe.pdfIn PDF document text
    • https://devigejijakefu.weebly.com/uploads/1/3/2/7/132740662/pagepipebitonel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411702/normal_602bb6991530e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413980/normal_6046241e90921.pdfIn PDF document text
    • http://monoga.space/cadent_gas_annual_report_2017fc1mx.pdfIn PDF document text
    • http://mgacessoria.online/the_crown_season_4_cast_dianas0ngi.pdfIn PDF document text
    • http://smartradiobf.ru/viturudisejinusebokukaxl1qo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4505326/normal_60162821f130d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494877/normal_604fc702dd052.pdfIn PDF document text
    • http://artyom.guru/231872496732kv84.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465938/normal_5fc9c78045c31.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gukutimaguvuzum.onlinewebshop.net/orbit_57894_instructions.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_off0000fedb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEDB 5320 bytes
SHA-256: 3719ba5ed27797872ccab142eb15391714bb9c788dda3318b3270e94f78a9848
font_01_sfnt_off00011108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11108 11384 bytes
SHA-256: b2b815402de4a25e1be635cb90b734cae3c68c4c38553b7036f544e1d90861b1

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