Malicious PDF — malware analysis report

Static analysis result for SHA-256 b251ab2dece94895…

MALICIOUS

PDF

89.2 KB Created: 2021-06-30 20:58:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 99a8793c951afb2274fccfb58bb3100d SHA-1: c0344180f9c7de8560afd281fd54410ce7524793 SHA-256: b251ab2dece9489545f6424272b6d8e80828791ecb5e89a852d4d8f6b36394a5
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous links to external websites, many hosted on compromised WordPress installations, suggesting a link farm or redirection mechanism. The primary URL, 'https://cructi.ru/uplcv?utm_term=free+vedic+synastry+report', indicates a lure for users seeking specific content, likely to facilitate phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9966

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://cructi.ru/uplcv?utm_term=free+vedic+synastry+report PDF link annotation
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084012f72c9b---73334638058.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/5be069f12e8b42d4a4f3cdd55331f6fa/80978273486.pdfIn PDF document text
    • http://www.advancedevents.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608f905a79c6a---gemibofodemupam.pdfIn PDF document text
    • http://sanarina.de/ckfinder/userfiles/files/97619891046.pdfIn PDF document text
    • https://adbadog.com/wp-content/plugins/super-forms/uploads/php/files/4f121008a5490f71342c5d40161cb257/61956687427.pdfIn PDF document text
    • https://www.officinadelgustoroma.com/wp-content/plugins/super-forms/uploads/php/files/d9216bbb5bfd6ecbf02c7f5d5b71e48e/16887223841.pdfIn PDF document text
    • http://perfekttorun.pl/pliki/16732984177.pdfIn PDF document text
    • https://dialogueinpraxis.net/files/docs/2525074320.pdfIn PDF document text
    • http://inlikeflintlogistics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098bc66ccf8c---basipig.pdfIn PDF document text
    • http://pk.mo/userfiles/file/buvepuroderagate.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/1c31ea3b75b659230a1407848ae24399/12103429276.pdfIn PDF document text
    • http://astro2sphere.com/admin/images/file/63171156177.pdfIn PDF document text
    • http://k1a.ru/images/files/file/13330964693.pdfIn PDF document text
    • http://khiconghoixuancong.com/Khicong/admin/userfiles/file/jipozisavudokobeleloxizem.pdfIn PDF document text
    • http://web68s.com/upload/files/pesuwofagugulozutibovirir.pdfIn PDF document text
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/95cl1br7burvr995bhea3fr3jd/67986620334.pdfIn PDF document text
    • http://gostium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea48ae2aa4---duwegiji.pdfIn PDF document text
    • http://eske.hu/wp-content/plugins/formcraft/file-upload/server/content/files/160988c6203afe---giruguxumuzedudulalor.pdfIn PDF document text
    • http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/5eba922db5b48fe5e8389f47fdc07eae/41101097646.pdfIn PDF document text
    • https://syntellect.ru/Repository/file/jugepubeguvijarena.pdfIn PDF document text
    • http://www.psstrecno.sk/wp-content/plugins/formcraft/file-upload/server/content/files/160a63f130c142---gowanexejajerabozotudev.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_off0000fa7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7E 10620 bytes
SHA-256: 5a67029056307be2adb46556680ab358b44b7d6cf8ea224089d1953bfd9bbfd8
font_01_sfnt_off000112ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112EA 17168 bytes
SHA-256: d1099e15864ed036c8b0e654ad6f06d194819c1dc85694d290a7e6834c35d204
font_02_sfnt_off00013fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FCA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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