Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e04abeed24cbe29…

MALICIOUS

PDF

91.9 KB Created: 2021-08-03 10:58:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 627307cfa15d5d64f37581625a495e86 SHA-1: bbf7e78d2ac459d1d32ce77e2172e52cc9ef2534 SHA-256: 7e04abeed24cbe2955c79cde4cc3e9fe5bab9b32739155108aa06016de7abce1
196 Risk Score

Malware Insights

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

This PDF was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The 'SE_PAYMENT_REDIRECT_LURE' heuristic suggests the document attempts to trick users into changing payment details, a common tactic in business email compromise attacks. Numerous URLs point to compromised WordPress sites, likely serving as a distribution point for malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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://www.onegelha.com/wp-content/plugins/super-forms/uploads/php/files/cadba347916399c8e85110e7fa10d798/64593492517.pdf
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fd38ba0318---86169562300.pdf
    • http://bjhtdszdh.com/v15/Upload/file/2021530542403075.pdf
    • https://grahampropertytax.com/wp-content/plugins/super-forms/uploads/php/files/a2400cbdacc7e01486db7e6bd2918e10/41846875443.pdf
    • http://notariocprietoa.com/notaria/documentos/files/92488021259.pdf
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/ecf5ee412d8f067eabe8fc7a5687697c/75219599708.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e1abbe091ac---57198493362.pdf
    • https://egokituz.eus/files/galeria/files/kimet.pdf
    • http://dsraxys.com/uploads/33430154117.pdf
    • http://southport1969.com/clients/861680/File/virep.pdf
    • http://www.toptehnik.si/images/ruvigovexo.pdf
    • https://faltprasten12.se/anvandarbilder/70/files/61154468266.pdf
    • https://bagstyle.uz/images/file/duzaditefesuxi.pdf
    • https://producedepot.us/userfiles/files/97613884779.pdf
    • http://inwallendorf.de/userfiles/file/31427217521.pdf
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/fmfte90cvqiojneaigi8ped811/87504249112.pdf
    • https://lingchuanfloor.com/app/webroot/userfiles/files/32842129532.pdf
    • http://aucoindeshalles.fr/menu/file/sowim.pdf
    • https://alnahamgroup.com/userfiles/file/lepunevotazekapipave.pdf
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/n6esfkleonri09o8ufdqpmtt53/lenubitizukonodabel.pdf
    • https://dvg.asia/ckfinder/uploadfiles/files/5690639203.pdf
    • http://minhphucvietnam.com/uploads/userfiles/file/70441094615.pdf
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/tsj0o41m5913p2l5o1f2qv83b7/kajulolitotod.pdf
    • http://sity-luxe.ru/userfiles/file/zowuxoporu.pdf
    • http://neuragen.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609347d9cafc0---55514296416.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=does+sleeping+with+jutta+affect+yennefer
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010198.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10198 16792 bytes
font_01_sfnt_off000119aa.bin
a742d2fd541e11fc35f4e1e3f7448ad0391bfb8d4bae118cf966a87710a85b4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x119AA 17424 bytes
font_02_sfnt_off00014741.bin
6fa2bb7352b3c4d8f4c0e9d57774bf8f6c400d0efc0e68cb1b6298138abc660b
pdf-font-stream PDF embedded font (sfnt) at offset 0x14741 11188 bytes