Malicious PDF — malware analysis report

Static analysis result for SHA-256 e698888959d3dacd…

MALICIOUS

PDF

75.8 KB Created: 2021-04-09 00:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 352c9067ad2088ae2f022464ab656891 SHA-1: badf413af3b7ee28473f4b83e733ddbdaa4526a5 SHA-256: e698888959d3dacdf4b0dd5257daf00a123a0ea9508b179187187cef4f0b75c4
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, many pointing to disposable domains, and a heuristic specifically flags it as a link farm on disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=how+much+to+have+a+stall+at+spitalfields+market PDF link annotation
    • https://lipijubirenazob.weebly.com/uploads/1/3/4/7/134722159/2a869.pdfIn PDF document text
    • http://gisujug.mypressonline.com/pefodurukikexedujudoxik.pdfIn PDF document text
    • https://zukikopan.weebly.com/uploads/1/3/0/7/130775822/nanigudigesivu.pdfIn PDF document text
    • https://feliwisinawo.weebly.com/uploads/1/3/1/8/131856919/kimilabife.pdfIn PDF document text
    • http://medtechnika1.ru/16753828753bd25d.pdfIn PDF document text
    • http://santaparker.store/saxubizafabenibosupizisilzalm4.pdfIn PDF document text
    • https://kixakusafi.weebly.com/uploads/1/3/4/8/134891224/rikitani_zolutewufu.pdfIn PDF document text
    • http://gukabibus.mygamesonline.org/zobakudidemufekuw.pdfIn PDF document text
    • http://pibakulisup.medianewsonline.com/icecream_converter_mac.pdfIn PDF document text
    • http://pipvip.ru/tovolo_ice_sphere_instructionsb2edn.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/5b84cd75-05ce-45fe-9499-9f638d775ffe/97762021905.pdfIn PDF document text
    • http://juludiripo.myartsonline.com/95133029712.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96abfb28-11b0-4df0-a9b7-bdd138d2e094/kitorotapidavunejupex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2473ebd5-fd30-4fe6-8ba9-1daacbb620eb/nortel_networks_phones_for_sale.pdfIn PDF document text
    • http://wukosow.epizy.com/babuvetta_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/befarekogol/22295399168.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/guidewire_claimcenter_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/zulojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a577dd17-bb89-4d44-995d-050e4ad9572d/how_to_use_silkn_infinity_hair_removal_device.pdfIn PDF document text
    • http://sigozezigi.rf.gd/40374382335.pdfIn PDF document text
    • https://s3.amazonaws.com/wovisak/50726099942.pdfIn PDF document text
    • http://nibubatovavav.atwebpages.com/ruxesimoja.pdfIn PDF document text
    • http://gedapewubu.epizy.com/roxixuxama.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/jukuzanefawuxokuwuda.pdfIn PDF document text
    • http://gigivixegaxun.epizy.com/vaxifunabasowedoronipuruk.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_off0000e857.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE857 5572 bytes
SHA-256: 8794c5a783c6923543eaaf6b72ebad79b1ded7e8996a65fbfe1eccc8e8ae4eb7
font_01_sfnt_off0000fb31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB31 11192 bytes
SHA-256: 652539a6b24d90c78eceb33b69a056040422ee71cbeb9951da34d2d39e2f336b

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