Malicious PDF — malware analysis report

Static analysis result for SHA-256 0fe09ab79716ccde…

MALICIOUS

PDF

86.8 KB Created: 2021-08-26 11:21:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 21a2332630870021c4f23118ec406be9 SHA-1: d867de8ac8a68aa222ac6239453acf33174965a0 SHA-256: 0fe09ab79716ccde69255b23f87a405258f4cb3e2769e595c77abca11cde65ed
156 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, directing users to multiple external URLs, many of which are hosted on compromised CMS platforms or disposable domains. The presence of numerous PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM firings strongly suggests a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 https://wagaskar.com/media/tolenawatisudikinutuj.pdf In PDF document text
    • https://mediabandit.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc796083330---74596925039.pdfIn PDF document text
    • http://greece-ex.com/images/blog//file/2775525122.pdfIn PDF document text
    • http://tsradviseurs.nl/mailing/images/photo/file/repinetazisaju.pdfIn PDF document text
    • http://erbilsunhotel.com/wp-content/plugins/super-forms/uploads/php/files/7n2m2qjibcfm242nvgjeallf81/88784532237.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/bnjjbbbdus2p10b1mpupatvru4/deduwozipamozusone.pdfIn PDF document text
    • http://hanleyresources.com/images/70084617798.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a8253db580f---duvazupimudef.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab82fadfcf6---sinilinulimodipip.pdfIn PDF document text
    • https://divanich96.ru/admin/ckfinder/userfiles/files/zerudurotutupitegiraj.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/kezelagupirez.pdfIn PDF document text
    • https://claphamjunction.com.au/wp-content/plugins/super-forms/uploads/php/files/062d290039b8d0f0c39b9e33a9cbcc40/ludazej.pdfIn PDF document text
    • http://aitrans.org/UploadFile/file/F1202105100625296474.pdfIn PDF document text
    • http://czytamzezrozumieniem.pl/userfiles/file/15302715691.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/298ef94a56d2e6fbcf1fd1756bf9b25e/50001370887.pdfIn PDF document text
    • http://innovad-ltd.com/userfiles/file/tifirosanitapinoxanije.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160b9133af0045---rekewuzeveladozatuzexufi.pdfIn PDF document text
    • http://decorstore.eu/upload/file/24706459316.pdfIn PDF document text
    • https://servauto.fr/img/user/file/somuzawimifivulamab.pdfIn PDF document text
    • https://xn--8--clcp3bi.xn--p1ai/files/kopudipewosasupasononi.pdfIn PDF document text
    • http://kimbuunguyen.com/uploads/userfiles/file/60767246475.pdfIn PDF document text
    • https://bjjewels.net/nbloom/fckuploads/file/xilirimukokuzujevomefod.pdfIn PDF document text
    • http://redwoodpwr.com/wp-content/plugins/super-forms/uploads/php/files/4c30enc26emj9tiiiesgsb87b5/73078696452.pdfIn PDF document text
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/44790e4963ac44a8f03323f50583972f/35589583247.pdfIn PDF document text
    • https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/t7qqco53c2j650qfeapu16ern6/55834793043.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=the+haves+and+the+have+nots+season+2+episode+6PDF 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_off0000edc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDC3 17484 bytes
SHA-256: 29764fff726b69e90231b3cd562bcc42046978626a31191d370d0b084734955e
font_01_sfnt_off00011a8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A8F 10660 bytes
SHA-256: 1f4c70c3614ee5a8e29eb640c791dbb9cde4c6d1d7abbbf64c44985cfcb893ae
font_02_sfnt_off00013306.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13306 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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