Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d2b637abaf6727c…

MALICIOUS

PDF

82.6 KB Created: 2021-08-22 03:24:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 0c84e3cf13a24446fcb658eaeefcb902 SHA-1: a1abe5d4145c13dfab940aaed0f6bc352c1b65be SHA-256: 0d2b637abaf6727ca15de69b5f5c392ae4e47b686cbe84eaf587ce63ebd33844
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised WordPress upload storage and other disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the structure and URL patterns are consistent with a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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://pokemom2.com/uploads/files/95384515984.pdf In PDF document text
    • https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/s1phuuj49jb7uc3jv757ceg09m/90171493163.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/r8j58r0ahgdbak4s5klsev7taq/86386195143.pdfIn PDF document text
    • http://halaljones.com/uploads/files/rinivedukipoxaduvogari.pdfIn PDF document text
    • http://starlightcelebre.org/clients/4/43/43e9139217482d7666ce300faf566241/File/65260799739.pdfIn PDF document text
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/9d4c796fee54d22fbadcf56a5b1745da/14649225918.pdfIn PDF document text
    • https://doucetplasticsurgery.com/ckfinder/userfiles/files/69577086236.pdfIn PDF document text
    • https://goodline.by/userfiles/file/92305231755.pdfIn PDF document text
    • https://www.amiunaorchestra.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160706e7a8767d---gixab.pdfIn PDF document text
    • http://cosmic-kino.ru/sadm_files/pokaxijerisus.pdfIn PDF document text
    • https://southernlightingsource.com/wp-content/plugins/super-forms/uploads/php/files/cb1132ca5a8798fad27de62c2e7cbd12/mojad.pdfIn PDF document text
    • http://jyjjapan.jp/files/ckeditor/files/tujikozav.pdfIn PDF document text
    • https://bf-pomosch.ru/wp-content/plugins/super-forms/uploads/php/files/ovnsvfusib74a5lfm1va4mmrm4/beboxefetanud.pdfIn PDF document text
    • https://chrmglobal.com/userfiles/file/bironubabasevewe.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16070b25f8d39a---69490381492.pdfIn PDF document text
    • https://www.rekalibracija.com/wp-content/plugins/super-forms/uploads/php/files/05022d68e5ff585525fa9fa5b93ea2cb/jepiratonewisovelof.pdfIn PDF document text
    • http://elsekmont.eu/userfiles/file/dibazivinezowebuxosa.pdfIn PDF document text
    • https://marblobathware.com/app/webroot/img/files/75275594779.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d21bd0a2921---kixoz.pdfIn PDF document text
    • http://s8radziejowice-paszkow.pl/userfiles/file/9023940600.pdfIn PDF document text
    • http://alompar.hu/uploads/content_files/files/52049412148.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/76104483279.pdfIn PDF document text
    • http://vector-mebel.ru/uploads/files/pejolo.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9bc3cce5e---53230216938.pdfIn PDF document text
    • https://kaskad-74.ru/images/uploads/bevemimutajenajasin.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=how+to+write+an+email+asking+for+information+samplePDF 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_off0000e00a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE00A 10872 bytes
SHA-256: 2e72e5bce19fa0a7e8fdc209ecd9eb17f59ef811cdf267ff52dd7857ba7fe895
font_01_sfnt_off0000f92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF92D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001113f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113F 16272 bytes
SHA-256: 407296cc8d562d81017502e3fe25d36298947363ebe95101aa9310e1fb93e374