Malicious PDF — malware analysis report

Static analysis result for SHA-256 47699a142cadfc1c…

MALICIOUS

PDF

79.2 KB Created: 2021-07-26 00:47:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-20
MD5: 49356fcef1e1534ba48dddf61bd6bc1c SHA-1: 46ac9543c6636556eafba6ce744aef2f23c9bcaf SHA-256: 47699a142cadfc1cfba0aaf5ba41d95c2168dcf2c4e30b6d9fb89e235e67ba91
156 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate the document functions as a link farm, directing users to multiple compromised or disposable hosting sites. These sites likely host further malicious content or phishing pages, aiming to deceive the user into downloading a payload or revealing sensitive information.

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 http://o2ashop.com/ckfinder/userfiles/files/90108911888.pdf In PDF document text
    • https://bistakalikotenetwork.com/userfiles/file/94995917508.pdfIn PDF document text
    • http://fixmyhelicopter.com/project-new/christianbook/upload_images/file/nudegewoled.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad659a23af7---70582246915.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/f7593b2dd8c56e6bb178c79d1b160dd2/20943424529.pdfIn PDF document text
    • http://ticaproduce.com/ckfinder/userfiles/files/21685960688.pdfIn PDF document text
    • http://totaleclipsenv.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080d80a63adb---paxidum.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607626cce1349---gawenanupekizomanezijulo.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160edd2441edc2---rulorepotufubapomaduzazo.pdfIn PDF document text
    • https://cvconstructionsgoa.com/pharma/admin/userfiles/file/20250389688.pdfIn PDF document text
    • https://n-v-v.dk/userfiles/file/24238224640.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089c5bf9e312---75284232824.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bfc965429de---67006442559.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/5965afff0aa57cc4c6e9622aea9f99cb/51390963665.pdfIn PDF document text
    • http://parcfamilyreunion.com/clients/b/b3/b3ae52aef0329bb57e848b27182677c8/File/wopujibiwolexobuguxeluna.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a353da7f4ba---zaremulebenubelufo.pdfIn PDF document text
    • http://www.fullmooneye.com/wp-content/plugins/formcraft/file-upload/server/content/files/160be5cd09b714---vakosiwokavaputepivid.pdfIn PDF document text
    • http://ubest.ru/images/file/49784650771.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607f28ea35aca---48434613598.pdfIn PDF document text
    • http://mrbossamktown.com/uploads/files/26792472026.pdfIn PDF document text
    • https://goactive.hu/wp-content/plugins/super-forms/uploads/php/files/2cc5c71802905d71b0749494a15286be/vugorukeluvagilotitujaved.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/kikoluzame.pdfIn PDF document text
    • http://optikametuje.cz/userfiles/file/55329640878.pdfIn PDF document text
    • http://hoanggiaphatland.com/uploads/image/files/teselufozonalagevevi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=ankara+oyun+havalar%C4%B1+full+mp3+indirPDF link annotation
    • 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_off0000d031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD031 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e848.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE848 10936 bytes
SHA-256: 8f4f00da184f8e61a1a652739279ebf1f7b68806127b23771db034d48fedfc74
font_02_sfnt_off00010152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10152 17904 bytes
SHA-256: 0882450749c34263ca217a2fa4060a015e17e581f923886b41a522c6517113ed

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