Malicious PDF — malware analysis report

Static analysis result for SHA-256 094558df4e09fb5a…

MALICIOUS

PDF

112.0 KB Created: 2021-06-28 19:06:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 6e9715ef2a38491915c3862760463020 SHA-1: e7b18f8676650e06bc82df65fbeb0cbe59776bc3 SHA-256: 094558df4e09fb5aa19f50688d95bf2cf6d7683f7fdeaeae0fdf49771b844ab6
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV. It functions as a link farm, containing numerous URLs that point to compromised websites. These sites likely host further malicious content or phishing pages, aiming to trick users into downloading additional malware or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9886

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://pistant.ru/uplcv?utm_term=scripture+seed+time+and+harvest PDF link annotation
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d04acb8d59b---nokalaw.pdfIn PDF document text
    • https://garyjetcenter.com/wp-content/plugins/super-forms/uploads/php/files/bad12d6e7876b499a9287a684d81e1e2/66132555521.pdfIn PDF document text
    • https://uleshuzataruhaz.hu/files/file/45623546143.pdfIn PDF document text
    • http://flomojapan.com/upload/files/titat.pdfIn PDF document text
    • http://trineckevzdelavani.cz/webpagebuilder/ckfinder/userfiles/files/lodumaboxepi.pdfIn PDF document text
    • http://fcv-bo.org/data/fcv-bo/userfiles/file/nilaxipifunaluxurobuwoge.pdfIn PDF document text
    • http://skncn.com/u/files/34752137043.pdfIn PDF document text
    • https://lostsoulsmemorialnj.org/wp-content/plugins/super-forms/uploads/php/files/32f9a726e7622cff2a9456c210736517/vuwemonofe.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8cf79c5793---zinopizujakorum.pdfIn PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/16086b58863382---gukajesutozegaxebifosug.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b622e0dfefb---77249527466.pdfIn PDF document text
    • http://www.tecnotrefg.it/wp-content/plugins/formcraft/file-upload/server/content/files/160813360f3394---jekimofifililaxosoj.pdfIn PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160985b6f0f153---19156226202.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1974a448d3---dusisakababisope.pdfIn PDF document text
    • https://netshopnepal.com/userfiles/file/baxifebiziledotifivo.pdfIn PDF document text
    • https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/62aae660fe29273de2fac747e7b7ae24/vijedewalofekij.pdfIn PDF document text
    • http://coreaad.com/DreamDataUpload/file/16328109375.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/a7dfabd1ac802b4be8cdb867185a00d0/xixozexidaj.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac8b6a0db8f---65841341767.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070e4970c9ad---kixebumobotunil.pdfIn PDF document text
    • http://abacusnancy.com/userfiles/file/pukomuwulizisop.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d4d1189f74---61448368633.pdfIn PDF document text
    • http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1607fdfb16b642---15934171985.pdfIn PDF document text
    • https://leosservices.com/userfiles/file/12367100704.pdfIn PDF document text
    • http://tamker.hu/userfiles/file/rawazo.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b640a0be949---52733986666.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_off00015408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15408 17700 bytes
SHA-256: 01eebfce8e1b9848eb10f9e3b68f2d09dd4d8ae2a6265683371323d42fcaa81f
font_01_sfnt_off0001817c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1817C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00019993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19993 10852 bytes
SHA-256: e644077c2f94d1b474a5837999818e9fb80b40c83a01f849041ed6b03fd87fef