Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bfd2919184a47aa…

MALICIOUS

PDF

97.2 KB Created: 2021-08-13 19:54:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 9ebac8a5823910a78a1da775c07d551b SHA-1: 8dfb2f109befad84ad22fc9f7ffb3fb711fab5db SHA-256: 9bfd2919184a47aad7bd168780fb5183ab50d3375dff57c94cf5a5c3a789a988
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous links pointing to potentially compromised websites, indicating an attempt to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware delivery. The presence of embedded JavaScript suggests it may be used to exploit PDF vulnerabilities or initiate further malicious actions.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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 http://riceart.ir/basefile/files/kakalevut.pdf In PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/74nqkj6sec1j7ljutdlj0s45up/35638601198.pdfIn PDF document text
    • http://jnafarms.com/clients/864068/File/61459185338.pdfIn PDF document text
    • http://ranaghatpchsschool.org/userfiles/file/xuniteboropaxalagijojona.pdfIn PDF document text
    • https://beliangka.com/contents//files/25224829444.pdfIn PDF document text
    • http://marinda.ru/pics/images/file/zepujim.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d8e8e39ba9c---3861256643.pdfIn PDF document text
    • https://www.3dreamchurch.com/wp-content/plugins/super-forms/uploads/php/files/9305940bf14ca8cd02107baed596b423/pugekobotexug.pdfIn PDF document text
    • http://ediliziaunoaventi.com/userfiles/files/gutanaxozavapelozonad.pdfIn PDF document text
    • http://nousgarage.com/userfiles/file/ruwofo.pdfIn PDF document text
    • http://symbioticlifetech.org/attfile/fckimg/file///2021070214016_883814437.pdfIn PDF document text
    • http://aimic.com/userfiles/file/luwilotabexasulim.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160c5197db8479---27964875250.pdfIn PDF document text
    • https://cor.org.ar/wp-content/plugins/super-forms/uploads/php/files/js78govht4gc4mgmc52vd5jni6/ladufu.pdfIn PDF document text
    • https://hoovermaids.com/wp-content/plugins/super-forms/uploads/php/files/b385a258b947557d46caa97e62a75c49/8667481135.pdfIn PDF document text
    • https://mfdesign.hu/files/file/19645616723.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/94524796566.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/10ba25da6ffc1aa503fdf3d2634a4fa0/28478396871.pdfIn PDF document text
    • http://rocincorporated.com/domain.com/images/dynamic_pages/file/budowesorirituviwivevap.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/jo5aq3kiva66p14s1kvrqd16h9/buvajonaminefagob.pdfIn PDF document text
    • http://avatars.ru/userfiles/file/murejejumeguput.pdfIn PDF document text
    • http://hourinkan.net/js/upload/files/xuzexisugeg.pdfIn PDF document text
    • https://awlights.com/wp-content/plugins/super-forms/uploads/php/files/6b22070f5983dfb8e2372e9916542191/8691084273.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/13590984437.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=sample+recommendation+letter+for+scholarship+from+professor+pdfPDF 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

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_off0001187c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1187C 17064 bytes
SHA-256: e234cfbfaebe7020cda87613c0a045ed6f17d0de03c2e1ddd0a745be7ea57417
font_01_sfnt_off000144d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x144D4 10960 bytes
SHA-256: 2d3288c91afaa3e24eb18fdb9f50bbb3493f3da102ba45ea7356f6a4d37cf59a
font_02_sfnt_off00015dfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15DFD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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