Malicious PDF — malware analysis report

Static analysis result for SHA-256 07b0efa22ccd06aa…

MALICIOUS

PDF

84.3 KB Created: 2021-07-02 02:59:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: fe8e3694455eea00999c51d720aa6da2 SHA-1: 27aae761c25a763ab7cfeca4087003a9d663b92c SHA-256: 07b0efa22ccd06aa6e16006166cbbbac7407bd68f1b43e4662aed240aa82d3b1
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it acts as a link farm or a distribution point for further malicious content. The 'SE_CALLBACK_LURE' heuristic indicates the document's content is designed to trick users into calling a phone number, a common tactic in phishing and tech support scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://philabc.ru/uplcv?utm_term=3+bedroom+1+hall+kitchen+house+plans PDF link annotation
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072acbcdef93---manorafajoxakopatufafab.pdfIn PDF document text
    • https://www.adelaarenergy.com/wp-content/plugins/super-forms/uploads/php/files/v9gj39enpgpnv91bdg676pdkp9/baribapadozejetolise.pdfIn PDF document text
    • https://www.dazzlingdecor.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5a27dafb74---fezatowofiwifoxubefogan.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/f25cef0e64825e342d10442234c8562a/bamupewofasurenuvijunubul.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/562734b27e86217ec0424eafb8c138b7/favigupege.pdfIn PDF document text
    • http://webhenevents.com/clients/868374/File/vedepisogugigodokiludol.pdfIn PDF document text
    • http://technoculture.cz/admin/upload/file/45537950021.pdfIn PDF document text
    • http://akcjonariusz.com/UserFiles/file/58222398763.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/ec7763817b13431b05a0f82eb31f8a6c/zosunelebalelajutuniwiw.pdfIn PDF document text
    • http://ahcxdq.com/uploads/file/300218051965.pdfIn PDF document text
    • http://mikomisushi.com/uploads/files/duguruzomerojogixalaw.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16079bf7840643---jezujovabivunuwovup.pdfIn PDF document text
    • https://filetorme.com/upload/files/xafurodexavel.pdfIn PDF document text
    • https://dgssu.com/upfolder/e/files/20210629084526.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160869f8e8a6e8.pdfIn PDF document text
    • https://motelandratecuci.ro/userfiles/file/79311403259.pdfIn PDF document text
    • http://self119.net/upload/userfiles/2021/05/files/210529145735.pdfIn PDF document text
    • http://artgraf24.pl/userfiles/file/66628983177.pdfIn PDF document text
    • http://medicapoland.pl/uploaded/file/73126477500.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/8be716f0fabbcc2014cbb15d8a821d40/9715809765.pdfIn PDF document text
    • https://dtcprojects.com.au/wp-content/plugins/super-forms/uploads/php/files/eas83n7e6jblj7ovq2l0ut8egc/55998691396.pdfIn PDF document text
    • http://kingspec.su/wp-content/plugins/super-forms/uploads/php/files/cn8mfkqlhbugm5lv249li6un2d/15072636054.pdfIn PDF document text
    • http://www.airportlimofortlauderdale.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a3ed0da09f8---xopudugi.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_off0000e5a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A9 11236 bytes
SHA-256: fe4ac93f48bc8fa26ca2d796a01a8262bcf6ba179a7bf92b0f21294e57e31460
font_01_sfnt_off0000ff9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000117ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117AD 17100 bytes
SHA-256: b1081394101d457b1e3efb23dfa917ba8b954e2c6a6c1020d0f9344cc8e20322

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