Malicious PDF — malware analysis report

Static analysis result for SHA-256 2992aedf94bf9759…

MALICIOUS

PDF

89.6 KB Created: 2021-08-28 13:11:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: d0c09c0c78392bd2f4a949fc939724c9 SHA-1: 5bcad22251e1378eefc42210f0bdb90fef4f5013 SHA-256: 2992aedf94bf975941ba4b0adc631681c27aa51aea54fccbb445021f787153f9
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded JavaScript stream and numerous URLs pointing to compromised CMS uploads and disposable hosting, suggesting it functions as a link farm for phishing or malware distribution. The presence of JavaScript indicates potential for further malicious actions, such as downloading secondary payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://philabc.ru/uplcv?utm_term=dr+philip+kennedy PDF link annotation
    • http://solarhomepage.ch/fckeditor/editor/images/file/wuxawujivulazogakitiwi.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/lowapojebosapibuxaweb.pdfIn PDF document text
    • http://brandiassociati.it/userfiles/file/63719427259.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/82421bf57a1d972f1bcce298e1b0dd96/gazonijabofu.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160850ca3b7875---fetakisixanamiwijomem.pdfIn PDF document text
    • http://jatechkj.pl/upload/fck/file/taxivinesumutafinumul.pdfIn PDF document text
    • http://china-miyaco.com/img/file/2021625193324.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/btkfqaev02ojapu76hvk4k3842/ribatonozusitawozafejipoz.pdfIn PDF document text
    • https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/42ed5d93677ba77ce977c40a160ae2b4/tetovamidit.pdfIn PDF document text
    • http://technoauto.jp/js/upload/files/xatewawibudafap.pdfIn PDF document text
    • http://escolacaritas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813e8954d8e---79211819524.pdfIn PDF document text
    • https://glbtrader.com/userfiles/file/5618334587.pdfIn PDF document text
    • https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/ajdkukcrodj4q7pneh1e8ch9h2/mebux.pdfIn PDF document text
    • http://ccswcd.com/userfiles/file/pugulopare.pdfIn PDF document text
    • http://transsnabstroy.com/userfiles/file/pojipikifagizosufubup.pdfIn PDF document text
    • https://www.endthestigmacounselling.com/wp-content/plugins/super-forms/uploads/php/files/8mkpb78edp24q10n9vo9k7kq6b/sitafik.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/88uol84ktgl95pb2595lh168gl/85795923653.pdfIn PDF document text
    • https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/888d82f19fae92194ee918ce338ebbac/56359471406.pdfIn PDF document text
    • http://munnarinfo.in/userfiles/file/xamalawulikuleb.pdfIn PDF document text
    • http://xn--80aafkqcanfpgnhbng3b5i9a.xn--p1ai/pict/file/rifawipenixakix.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7c4d75544---81140411454.pdfIn PDF document text
    • http://okmarin.ru/userfiles/file/3750427459.pdfIn PDF document text
    • http://ackerviewguesthouse.com/userfiles/file/33083564041.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fa6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA6F 10148 bytes
SHA-256: 0904c52f83da1d789724e0e7b139943c649ad100d26525dbaeb2c8f65b43e8f4
font_01_sfnt_off000110ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12900 17844 bytes
SHA-256: 13cdf1f84fb980552f31d7c792a526324115afa3c887aa5bf11d54c11e0d5d0a

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