Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0cebe047fb3a7b7…

MALICIOUS

PDF

83.4 KB Created: 2021-09-17 04:16:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 13172e2a5af910e5ab4454f31893251d SHA-1: d00f06fec73f6b8154acb54caaa886586b19f3cf SHA-256: f0cebe047fb3a7b7c8aa5f4bc73e26057a659012c281d34f39fb778b66a57833
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://allytemp.ru/uplcv?utm_term=aristotle+ethos+pathos+logos PDF link annotation
    • http://irinaburmistrova.ru/files/30120308714.pdfIn PDF document text
    • https://ykitraders.com/UserFiles/file/29820055863.pdfIn PDF document text
    • https://mimpishio2.com/contents/files/82042959766.pdfIn PDF document text
    • http://filippodelvita.com/demo/userfiles/file/62654775464.pdfIn PDF document text
    • https://mercerapparelss.com/userfiles/files/fiwibirovuj.pdfIn PDF document text
    • https://ikansambel.com/contents/files/tesojezixadokim.pdfIn PDF document text
    • http://weforyou.it/userfiles/files/52668670841.pdfIn PDF document text
    • http://cs-web-design.de/ablage/userfiles/files/tifujaveb.pdfIn PDF document text
    • http://keletunderground.hu/images/uploaded_pics/file/86323875938.pdfIn PDF document text
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/161301a849bd25---53429669681.pdfIn PDF document text
    • http://idcla.net/upload/files/mukaf.pdfIn PDF document text
    • http://hyosangjo.com/userfiles/file/20210902231804.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/nawotisovopifigofiwigesak.pdfIn PDF document text
    • http://dyglas.com/userData/board/file/5474734476.pdfIn PDF document text
    • https://ap-qatar.com/userfiles/files/34119210414.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/16142f62df0b69---52227004563.pdfIn PDF document text
    • http://theemasternetworker.com/ckfinder/userfiles/files/pinozafo.pdfIn PDF document text
    • http://eluvial.com/sites/all/sites/eluvial.com/files/65742019883.pdfIn PDF document text
    • https://washlounge.in/ckfinder/userfiles/files/pewulazebibukarituxovaxeg.pdfIn PDF document text
    • http://hai-bi.com/uploads/files/202109141930173057.pdfIn PDF document text
    • http://lltsg.com/uploadfile/file///2021091305194744.pdfIn PDF document text
    • https://pottoka.info/files/galeria/files/58961320193.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/3722d71d120ad108d6cd2d0985f0628d/wamupizatudutusifip.pdfIn PDF document text
    • http://aristosaigonhotel.com/uploads/files/6125856468.pdfIn PDF document text
    • https://hantverksakuten.se/ckfinder/userfiles/files/28995388679.pdfIn PDF document text
    • https://spencershaulageltd.co.uk/wp-content/plugins/super-forms/uploads/php/files/0e2d3eb02b60ac105b2ff8c315a4af08/33125781039.pdfIn PDF document text
    • http://isleford.com/filespath/files/20210917021852.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://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_off0000e19e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE19E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f9b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9B5 10408 bytes
SHA-256: 67b8b203e5ab3393783c455dc26c80a51590d61b1ae6f0dc5f94dbd2aeed9238
font_02_sfnt_off0001116d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1116D 18028 bytes
SHA-256: da541bce5e363939060a2b0d9d488ee952e4982840e8fc34de6c7f2a13bd8d29

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