Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bc09be7b3b8587b…

MALICIOUS

PDF

105.5 KB Created: 2021-09-01 11:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 029b90768a404959b264910d1e83570c SHA-1: b18fcf7a212536d724c3d34c08cb1eed88ea435d SHA-256: 9bc09be7b3b8587b80b8c44ba5c715f7cec022a54a02fb880d3ab01c4e10a272
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 as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of malware. The file contains a link farm pointing to numerous disposable hosting sites, suggesting an attempt to distribute malicious content or conduct phishing. The presence of external URIs and compromised CMS upload links further supports this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://garglob.ru/uplcv?utm_term=two+square+cipher PDF link annotation
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d2e0a48d53---mopitofadapoduvakik.pdfIn PDF document text
    • http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/34284261196.pdfIn PDF document text
    • https://rosewoodcity.org/nbloom/fckuploads/file/48323357233.pdfIn PDF document text
    • https://purefeeling8.com/data/file/ziwisobajuvez.pdfIn PDF document text
    • http://www.iycadana.org/wp-content/plugins/super-forms/uploads/php/files/ahkpionu3t968fua8b4lvaipr0/dodepunikudumok.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/bca005577a1ec5b49e4d7a98a4a340c5/88640287764.pdfIn PDF document text
    • https://treasurehunterdetectors.com/ckfinder/userfiles/files/mutifunonekugami.pdfIn PDF document text
    • http://acpiindia.com/userfiles/file/49126185210.pdfIn PDF document text
    • http://jmdfhjl.com/fckeditor/userimages/file/14007504494.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/d49aea18a52d02c575f9a9e31e2d3f6a/35244322613.pdfIn PDF document text
    • http://sinproval.it/userfiles/files/sutemisalizixulavezitoseb.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/sutiked.pdfIn PDF document text
    • https://akemi.ro/hirek/file/binaninixuve.pdfIn PDF document text
    • http://moveworldtogether.com/datas/files/runilujizimikuvalufe.pdfIn PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c44fd7b75da---51335110838.pdfIn PDF document text
    • https://smarttactic.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16099a380406f6---30894311033.pdfIn PDF document text
    • https://www.sacict.or.th/ckfinder/userfiles/files/tefirikologivewulijibugu.pdfIn PDF document text
    • https://wurstfargo.com/wp-content/plugins/super-forms/uploads/php/files/3ac68b1ec72c60774d1c247ebf1079fc/13535526183.pdfIn PDF document text
    • http://s-privod.ru/userfiles/file/nasijovokotavosifaxow.pdfIn PDF document text
    • http://kukubara.com/zdjecia/file/38685309001.pdfIn PDF document text
    • http://csc-0411.com/userfiles/file/20210720051126_oks81b.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/9c23093dec70c968b156c002cb3c2557/33437131588.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_off00013185.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13185 20552 bytes
SHA-256: 5f426715cffc0bc201a03b273bf215ea17887b13d2b388145ff9dcf91279d5ad
font_01_sfnt_off000166d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x166D4 10516 bytes
SHA-256: 75b0c328288dcef91095cd3aade2d716be2d0fd84a03e8df33bc02e075b3f741
font_02_sfnt_off00017efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17EFB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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