Malicious PDF — malware analysis report

Static analysis result for SHA-256 009c1d4795e71d13…

MALICIOUS

PDF

75.3 KB Created: 2021-08-30 02:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e2ed127028297fe63d95c40db569ad37 SHA-1: 4b6f41d22e3b90f3ba7bfdab68ea8d7d57b4af42 SHA-256: 009c1d4795e71d13891735f8abeebdd5ac32cc0d9151d9ab231645085ebbd56d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The file's structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/160783a9062068---42100294501.pdf In PDF document text
    • https://cosalesrep.com/wp-content/plugins/super-forms/uploads/php/files/45153e5ca9deaf35397799409f6f6e9c/bisesasasusigewalugoxu.pdfIn PDF document text
    • http://web-news.eu/www/pkpar/userfiles/file/81898198072.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/160755b82821ea---88751804486.pdfIn PDF document text
    • https://teenvolunteerdallas.org/wp-content/plugins/super-forms/uploads/php/files/3dc7b7524428cf627f7ae70d243434a4/27782145076.pdfIn PDF document text
    • http://tuanlongland.com/upload/files/nofupimewaponev.pdfIn PDF document text
    • http://sirmamedia.com/ckfinder/userfiles/files/8554538687.pdfIn PDF document text
    • http://www.luminicaambiental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608235629393f---winodekaxefupotatezuf.pdfIn PDF document text
    • http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d937e482b1f---2758435902.pdfIn PDF document text
    • http://emeraldcovepartners.com/_data/images/file/51177445107.pdfIn PDF document text
    • http://i-harmonics.com/upload/files/92435474901.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/1607554cce5789---kawizu.pdfIn PDF document text
    • https://comesa.com.pe/wp-content/plugins/super-forms/uploads/php/files/fuean1cuojkf6nal5kfrnq12k4/perevubuvakurisem.pdfIn PDF document text
    • http://www.radiopopiatej.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aa7a11df5a---7304462226.pdfIn PDF document text
    • https://capecoralliving.com/media/file/xowakizinum.pdfIn PDF document text
    • http://96rangjai.com/userfiles/file/wefigigaralur.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/52dd6e936d57f8d3faa72bf3a3260682/11040521501.pdfIn PDF document text
    • http://www.madiran-cruduparadis.fr/ckfinder/userfiles/files/79306794124.pdfIn PDF document text
    • http://aescantabria.es/upload/fckeditor/file///xevagumelevefojigumir.pdfIn PDF document text
    • http://webbuilders.com/files/file/94199459415.pdfIn PDF document text
    • http://3wsystems.com/shipinc/userfiles/files/65186741470.pdfIn PDF document text
    • http://bioscipublisher.com/files/upfiles/file/30429571178.pdfIn PDF document text
    • https://lightspec.com/wp-content/plugins/super-forms/uploads/php/files/d6c7c51cc8c6e610ba4010293b144d30/renajakefexoluxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=testicles+in+dogsPDF 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_off0000c445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC445 10244 bytes
SHA-256: d5efad3ed1a54ee5e90f797447245af12dbb2cec4cd0be92bf0cbb41eb70e623
font_01_sfnt_off0000db2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB2E 16632 bytes
SHA-256: c5917b72b2bba605400148c3d44225d70334bb62d4825e91ecf09f67e75827b6
font_02_sfnt_off000105e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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