Malicious PDF — malware analysis report

Static analysis result for SHA-256 e085ba6ad11954a6…

MALICIOUS

PDF

80.7 KB Created: 2021-09-04 17:15:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 33c1820e24d4a5910633e2e0420eca4b SHA-1: 48ed6a12e6610d121fb833ae21fdb96434019119 SHA-256: e085ba6ad11954a6e880da05f475790604d30d96406e962682420b2a4f6214c6
156 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous external URIs and is identified as a link farm, with many links pointing to compromised CMS uploads or disposable hosting. These links likely serve as lures for phishing or to download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://crysiq.ru/uplcv?utm_term=algebra+1+glencoe+mcgraw+hill+teacher+edition+pdf PDF link annotation
    • http://activesolutionelectric.com/images/file/tuvuwulogebasakovos.pdfIn PDF document text
    • https://efficientinfocomm.com/ckfinder/userfiles/files/xinerikivuziwukaxuwal.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160d48166b4e9b---nimowobitaxom.pdfIn PDF document text
    • http://glamour-nsk.ru/ckfinder/userfiles/files/jolawapigezage.pdfIn PDF document text
    • http://amon-syotengai.com/userfiles/file/43665469280.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608925d3cd1e7---jinagugupanuxokin.pdfIn PDF document text
    • https://pfollowers.com/ci/userfiles/files/xufexowazopeledo.pdfIn PDF document text
    • https://pypconsultores.mx/userfiles/file/nepipixewu.pdfIn PDF document text
    • https://burgas-remonti.com/userfiles/file/ximogogogumovegoxedita.pdfIn PDF document text
    • https://www.urban-quartz.co.uk/wp-content/plugins/super-forms/uploads/php/files/ccba8afd018755d629725bb254063596/87894383300.pdfIn PDF document text
    • http://a-kamen.com/userfiles/file/redowugowudigazav.pdfIn PDF document text
    • http://asalsold.com/wp-content/plugins/formcraft/file-upload/server/content/files/161276efaa531c---96756526409.pdfIn PDF document text
    • https://dialogueinpraxis.net/files/docs/66499363544.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/74455004777.pdfIn PDF document text
    • https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/47fcf40bdad631ca93d5251ef39651a0/32944662280.pdfIn PDF document text
    • http://bigxra.com/uploadfile/file/2021052616520373499.pdfIn PDF document text
    • http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/161058d063a031---voxatimugoruketakufami.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/16111ef8a119b7---gikoki.pdfIn PDF document text
    • http://frangarcia.eu/upload/file/mofumavojedalifoxav.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/32472618640.pdfIn PDF document text
    • http://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/158f9634b69479b55c23b2bba156d725/vovomatuguzevupegubup.pdfIn PDF document text
    • http://e1pl2.nazwa.pl/busy/fotki/file/14330566033.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d34b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD34B 11156 bytes
SHA-256: 30896436a1fc293d2e3e60117ff0fbbff6eb453d8a4be78dc03cba84c2efbf1b
font_01_sfnt_off0000ecd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD9 18188 bytes
SHA-256: 413790b7c186c4e646fc0d7b6b60b340690d3bf73729c82f3a24e7021dc8a7cb
font_02_sfnt_off00011c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C69 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.