Malicious PDF — malware analysis report

Static analysis result for SHA-256 09bacd3d3c48dd3e…

MALICIOUS

PDF

82.8 KB Created: 2021-09-01 20:15:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 35b57a910d7b7968cdbf36ff4d5804b5 SHA-1: 285b687c92c8e2f395ed29a8017a0572dda137a8 SHA-256: 09bacd3d3c48dd3ec2f253b7992ee63f4fff3c95dcaaf11a3a37bb9785e94b29
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites or disposable hosting, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to malicious content or phishing pages. No scripts were extracted, and the document body was unreadable, but the URL patterns are sufficient to infer the attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://ketchas.ru/uplcv?utm_term=cervical+spine+laminectomy PDF link annotation
    • http://studiopedrazzini.eu/userfiles/files/sukidavijujoxu.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1609102ea072c6---20521253554.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/diluxulekopibel.pdfIn PDF document text
    • http://thy-environment.com/userfiles/files/dunun.pdfIn PDF document text
    • https://fcr-fomentoconsumoerenda.com/uploads/files/67753815054.pdfIn PDF document text
    • https://viettincapital.vn/upload/files/tumugozusadenave.pdfIn PDF document text
    • https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160873fb3026b2---mevubawar.pdfIn PDF document text
    • https://dmvassociates.com/wp-content/plugins/super-forms/uploads/php/files/932fc1d554c04740a1ccb3b9c2700a46/75006577926.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/1019cjr8rdk7isb9rjno8k1fuu/zirevode.pdfIn PDF document text
    • http://xsjprinter.com/d/files/66213734257.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/54598617197.pdfIn PDF document text
    • https://hafa-verein.de/wp-content/plugins/super-forms/uploads/php/files/27f49204e8097a5d15ce7f8aca5eb857/lapisulazewetivovapofa.pdfIn PDF document text
    • http://www.farparts.cl/wp-content/plugins/formcraft/file-upload/server/content/files/16124db343277c---rodotumitise.pdfIn PDF document text
    • http://jimsclub.net/new/board/img_tinfo/file/20210822095916.pdfIn PDF document text
    • https://bamor.org/userfiles/file/vaxoxe.pdfIn PDF document text
    • http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607acbd8c4f36---jekereramebetiwugimag.pdfIn PDF document text
    • https://www.myjamaicais.com/wp-content/plugins/super-forms/uploads/php/files/9fd30a29a96e0ac8ff7bfd7d796f0a20/27095414.pdfIn PDF document text
    • http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc1a0e7463---xesegofezubi.pdfIn PDF document text
    • http://nct-vn.com/userfiles/file/60029413825.pdfIn PDF document text
    • http://serdceprirody.ru/userfiles/file/wepotuguwir.pdfIn PDF document text
    • http://kiiga.ru/userfiles/file/10270451261.pdfIn PDF document text
    • https://atlanthealth.com/wp-content/plugins/super-forms/uploads/php/files/b785c5ff70074c20406cdf350b506ef7/85309610195.pdfIn PDF document text
    • https://too.kg/wp-content/plugins/super-forms/uploads/php/files/2afe1506491ef6e102107f6bef2e81ad/71688617028.pdfIn PDF document text
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/7f4abab42a6b732df596833a12824ea1/7120897898.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_off0000e154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE154 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f96b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF96B 10744 bytes
SHA-256: 0bc9ee7e0c8d5c6a8e79db5e305904ba27f8a8cb1b6fc8d9bc75276be7cf7378
font_02_sfnt_off0001122a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1122A 16152 bytes
SHA-256: 8f8313dfcea5b468aaca508b60c016128f8598545a2f2720e2c04f4ef7b202d8

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