Malicious PDF — malware analysis report

Static analysis result for SHA-256 11498ccecb4f3219…

MALICIOUS

PDF

89.1 KB Created: 2021-07-02 13:41:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: fe2edbe14d7aae84c35b1faa2ce97903 SHA-1: b68087d1579b96428797d19c2115634f363b2e06 SHA-256: 11498ccecb4f3219bdd52a75c13fabbe32d22dd085af3700b091b1cf4fc6e69c
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 and a machine learning classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. The file contains numerous embedded URLs that point to compromised WordPress sites, suggesting it functions as a link farm to distribute phishing content or further malware. The presence of these links and the overall structure indicate a malicious intent to redirect users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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=can+you+get+pregnant+from+precum+when+your+ovulating PDF link annotation
    • https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/ee32dd6a76cb258234c6cefb756a6d91/nivigukevikugamidi.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ab102c174ad---wifulabuxefubizani.pdfIn PDF document text
    • https://chicagoportablexray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba6519d6340---67843002203.pdfIn PDF document text
    • http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/160dac1390ab9a---pagetuxaxafaxal.pdfIn PDF document text
    • https://mziagroup.com/wp-content/plugins/super-forms/uploads/php/files/m2mg4k0i8pedtk6srmtvhif4du/85759209933.pdfIn PDF document text
    • https://encouragingmath.com/wp-content/plugins/super-forms/uploads/php/files/a599cb79533ef4509ebead4b3fbb03c8/93472799402.pdfIn PDF document text
    • https://zoorichi.com/temp/fckeditor/file/11910504733.pdfIn PDF document text
    • http://rghsalumni.com/clients/82979/File/65420941633.pdfIn PDF document text
    • https://www.chauffeur-prive-nice.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16074c7b765c11---pilaranelokid.pdfIn PDF document text
    • https://ateneoarbonaida.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4594b270e2---37916852587.pdfIn PDF document text
    • http://pleasanthillpchurch.com/clients/5/55/55aa087cacc886b2254ddcc242c0699b/File/62893907870.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080e7f69c89f---xupimufuwawefemaso.pdfIn PDF document text
    • http://www.miamiairportlimo.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a12260cbec3---gafepigosomuvutugijaf.pdfIn PDF document text
    • http://syuncyoku.jp/upload/file/fokurexiwixepiwotab.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/jefugidazun.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/55559032457.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/b9e2ac140ed48efad8845c0a14754243/75917128944.pdfIn PDF document text
    • http://cambridgekapurthala.com/damana/userfiles/file/janenapelodorididegabi.pdfIn PDF document text
    • https://e-lightingcontrols.com/wp-content/plugins/super-forms/uploads/php/files/2e47a83cffd532f02f83aa682d02f1a9/lagafiduro.pdfIn PDF document text
    • http://unesco-mediain.cz/fckfiles/file/6046379370.pdfIn PDF document text
    • https://slezanie.eu/userfiles/file/simeput.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d240724ec5c---47332419247.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_off0000f87b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF87B 17168 bytes
SHA-256: 7267451414c44a57e7540e5307fea3680fd7f42e668f7f604577fa65036a1068
font_01_sfnt_off00012513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12513 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D2A 11156 bytes
SHA-256: ae4897cbf189d937b967be2414feb2585e6279db411aaf80bdfea5dde47cb2a8

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