Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e5ef78c2532663…

MALICIOUS

PDF

71.5 KB Created: 2021-10-08 02:20:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 694176e3fc7ea09b4c602966b0126aee SHA-1: c5196a315cbe74db25387e412df1bfad94631958 SHA-256: 00e5ef78c2532663a4dc1d65f879da9953504d44b46edc780d3e25cf52c0f5d1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://socardan.com/userfiles/files/zuvorot.pdf In PDF document text
    • https://mannerfeltdesignteam.se/ckfinder/userfiles/files/penodi.pdfIn PDF document text
    • http://placidlakes.com/larpm/uploads/file/gifunaliboraf.pdfIn PDF document text
    • http://turchifiltri.com/userfiles/files/xasomekugatukonaseturuxin.pdfIn PDF document text
    • http://skncn.com/u/files/madetidavaxosujefewet.pdfIn PDF document text
    • https://magnettoptan.com/upload/ckfinder/files/dazozekiw.pdfIn PDF document text
    • http://bolshunoff.ru/images/wysiwyg/file/22318252559.pdfIn PDF document text
    • http://maekuangudomthara.com/ckfinder/userfiles/files/67521205670.pdfIn PDF document text
    • http://orsini-blasioli.it/userfiles/files/66470107235.pdfIn PDF document text
    • http://andreuma.madteam.net/ckfinder/userfiles/files/wepabezoniwede.pdfIn PDF document text
    • http://naim.naparts.com/images/fck/file/16277337630.pdfIn PDF document text
    • http://www.herbertvanderbrugghen.nl/draft/wupukixisigup.pdfIn PDF document text
    • http://playbabydoll.com/userfiles/file/4917816825.pdfIn PDF document text
    • http://www.fuchingrading.com/upload/file/wudagiv.pdfIn PDF document text
    • http://skinct.com/upload_file/file/Fl202109111017328525.pdfIn PDF document text
    • http://geofer.eu/userfiles/files/44233251587.pdfIn PDF document text
    • https://blv.by/upload/editor/files/jonab.pdfIn PDF document text
    • http://smcertificationservices.com/userfiles/files/depobisosokigesodejak.pdfIn PDF document text
    • http://biolabsrl.org/userfiles/files/86721530048.pdfIn PDF document text
    • http://bachova-terapia.sk/images/file/mofirafibus.pdfIn PDF document text
    • http://strahyi.ru/images/file/wifutubikisogorozasodefo.pdfIn PDF document text
    • https://solucionaesp.com/ckfinder/userfiles/files/bebakitojabedin.pdfIn PDF document text
    • https://nisahanpin.com/calisma2/files/uploads/61196207309.pdfIn PDF document text
    • http://wedooverseas.com/userfiles/file/nazotelezasapakebeliwiko.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=elements+of+real+analysis+s+chand+pdfPDF link annotation
    • 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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB333 10980 bytes
SHA-256: 72e549b0902580f2cfcd667323580596e8a95b8460f975813c8beb692b09f966
font_01_sfnt_off0000cc85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC85 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE497 17428 bytes
SHA-256: 511008a0a32c007cb81652a21eb3e170797ef7634d12a77fdf4b5390a0a95a04

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