Malicious PDF — malware analysis report

Static analysis result for SHA-256 ded992534fa26fe7…

MALICIOUS

PDF

83.1 KB Created: 2021-06-28 04:04:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 0cd9fb8889e4b06da7dae38ee0578f1e SHA-1: 48c3e8602f2474ef7888d0ededd59fb102e2e1d3 SHA-256: ded992534fa26fe77c70e1c5f1f8206921b7840c92081776948f4c73bf37c56a
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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 http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bdac9eedaaf---fegewabinetosubojivur.pdf In PDF document text
    • http://beiwendq.com//data/attachment/file/xaginapenelumi.pdfIn PDF document text
    • https://htfcompact.com/wp-content/plugins/super-forms/uploads/php/files/6e164a8069dd4ec577d946abcfdccca7/timuvovutikevapa.pdfIn PDF document text
    • https://parisautotravel.com/wp-content/plugins/super-forms/uploads/php/files/fk0vnvok0gjcrdp65qidjb25f2/texekonolibinejosof.pdfIn PDF document text
    • http://smitheaster.org/clients/861344/File/suvolorabesebosesadi.pdfIn PDF document text
    • http://originalcheck.it/public/img_admin/file///gekiteribu.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/b3979f5e9cdbe8ddc3f3a7f1b1de8a01/darevuzitotigovaranepefot.pdfIn PDF document text
    • http://baliretreatcenter.com/olabali_ci/media/images/newsfiles/pataluzuzo.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/v08foejhbr66me5gngdvg8p5e0/ralumerotujagogelim.pdfIn PDF document text
    • https://aventura-agence.lu/userfiles/files/68510178445.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/4bc00543551dc751a6a39300d4c10315/17652553795.pdfIn PDF document text
    • https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/e1931a0ff3981f77d3a7091b1db80dfe/64457606770.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f17d05c64a---duvesenusu.pdfIn PDF document text
    • https://www.hontoys.com.au/wp-content/plugins/super-forms/uploads/php/files/olukjde0onlbre319pbqmrf43a/29565585079.pdfIn PDF document text
    • http://www.mondzorgvesa-voorschoten.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b36c8c213ad---xanijefasemaxumaworujik.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/vinerasar.pdfIn PDF document text
    • http://graham1978.com/clients/79565/File/dexupekiwew.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608013546cda0---kikaruromoxovomojaseko.pdfIn PDF document text
    • https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/kktgcqo8gp2msavae0vnjmpl7b/pixovemaga.pdfIn PDF document text
    • http://0vote.com/ckfinder/files/74812681362.pdfIn PDF document text
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a716498580---62679474192.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/zikilot.pdfIn PDF document text
    • http://rebornfair.com/FileData/ckfinder/files/20210610_1F492464E1C1F633.pdfIn PDF document text
    • https://3dreamstudios.com/wp-content/plugins/super-forms/uploads/php/files/88a7be4dd29c8a69acf9bd7c4ccd120b/zagepe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1KS0DP0cxss/uplcv?utm_term=red+tilapia+pricePDF 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_off0000e1d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1D3 18020 bytes
SHA-256: 81e68cabc80b39cb712f1548450d8856cd4c52339ebacb1bcbf262b5e2af5f9c
font_01_sfnt_off000110b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B5 10160 bytes
SHA-256: f0080686a2eab27c6e2c89afbf274a944978cf65802027b142d0997bd90ccb12
font_02_sfnt_off00012782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12782 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1