Malicious PDF — malware analysis report

Static analysis result for SHA-256 34f091ca3e462d33…

MALICIOUS

PDF

75.3 KB Created: 2021-07-08 00:38:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 601e34193a603469126f15b11ec4bd1a SHA-1: d206ce6805ed4929d5229780933aa8a30ad939ca SHA-256: 34f091ca3e462d33e5a5137b3f15b99a74b0b85ee985a48a651e0b3216aacb96
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious. It contains a link farm pointing to numerous domains, many of which appear to be compromised WordPress sites or disposable hosting, suggesting a phishing or malware distribution lure. The embedded URLs are designed to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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=microsoft+office+word+2007+step+by+step+pdf PDF link annotation
    • http://ahxxzx.com/userfiles/202105/file/65208073587.pdfIn PDF document text
    • http://magnachip.cn/userfiles/file/20210524023412.pdfIn PDF document text
    • http://igorodstore.ru/files/userfiles/files/fulajajagevozew.pdfIn PDF document text
    • https://givemeit.ru/wp-content/plugins/super-forms/uploads/php/files/e44b770228b998d07bdee830733883f2/buretupigifi.pdfIn PDF document text
    • https://www.avenueroadadvertising.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080773203c41---meronopowipinogi.pdfIn PDF document text
    • https://mimpiindah2.com/contents//files/31651689866.pdfIn PDF document text
    • http://seyrimerdin.com/userfiles/file/zijaxuwufetupo.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cb0bec4de3---62962153779.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3b63a557b1---ximikil.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/jlcvfn20cttbrmptru15q8ldm1/ganovirofememifuzisi.pdfIn PDF document text
    • http://lukinserv.hu/file/14411108689.pdfIn PDF document text
    • https://www.msolartop.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160c8c865ef75a---14322638596.pdfIn PDF document text
    • https://tasivn.com/upload/ck/files/91368724868.pdfIn PDF document text
    • http://accessiblevehicleservices.com/userfiles/file/moguxexivuzagudixutetuw.pdfIn PDF document text
    • https://123kozijnofferte.nl/wp-content/plugins/super-forms/uploads/php/files/n5qjit2vgvtslm217l0k0htgj0/99164831823.pdfIn PDF document text
    • http://alliusie.com/userfiles/file/rikugoperedorebuzore.pdfIn PDF document text
    • http://www.radioemka.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f6e2693b62---gulujizeweni.pdfIn PDF document text
    • https://zzarosiscarampola.it/file/zilami.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088893def9ed---17990791794.pdfIn PDF document text
    • http://riversedgefm.com/files/file/gotepibawujezoxane.pdfIn PDF document text
    • https://anzmrrn.org/wp-content/plugins/formcraft/file-upload/server/content/files/16080e72a0ea29---piwosakeraxite.pdfIn PDF document text
    • https://hanurichurch.org/ckfinder/userfiles/files/78955554129.pdfIn PDF document text
    • http://konemara.hu/userfiles/file/42420688987.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_off0000c2f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F5 16656 bytes
SHA-256: a0c5ad68a57ff55078d2bd54af05b167e1564e275852c283083a9b980a28de36
font_01_sfnt_off0000ee64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE64 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001067b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1067B 10924 bytes
SHA-256: 806d1279480d7af4c3622311a52a2cfc4575d9aff1322460c49cbc5662de2560

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