Malicious PDF — malware analysis report

Static analysis result for SHA-256 b215a006097a1383…

MALICIOUS

PDF

78.8 KB Created: 2021-09-08 11:47:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 532dddba6e3bf20976a930c6c3ad4139 SHA-1: 98dc25656490328718d428e30f63f2878f3b011d SHA-256: b215a006097a13830e70667269cce1d15c32e8d210148554d177dd9f8812b5e3
156 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains a large number of embedded URLs, many of which point to compromised WordPress sites or disposable domains, suggesting a link farm designed to distribute phishing content or malware. The presence of these links and the overall structure indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://cructi.ru/uplcv?utm_term=dometic+9100+power+awning+manual PDF link annotation
    • http://aklond.com/UploadFilesfile///2021050206321831.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/8v38eta40atlnjsu6tku801s43/92839702043.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/16097a9a9bd897---rinebufaxozalujizigi.pdfIn PDF document text
    • https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/8890ab59516c699b076f2dd7cf10bbae/29953086505.pdfIn PDF document text
    • http://tcsm62.org/uploads/news/file/genogupozu.pdfIn PDF document text
    • http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fa0ac94d43d---gowata.pdfIn PDF document text
    • http://www.goataxiservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160744029e690f---49485429522.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/kla9bc2191l45nvvluspujn15d/76817602948.pdfIn PDF document text
    • http://casaledellasignora.it/userfiles/files/75689085800.pdfIn PDF document text
    • http://asfus.net/virgsurv/userfiles/file/8478364550.pdfIn PDF document text
    • https://taperagi.com/contents//files/wetixisusurajawipuzuxuzu.pdfIn PDF document text
    • http://euro-ex.com/images/blog//file/xubowuvoniwitokimetogetad.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/1cd1a38058091b7d24ab687212509465/21364273633.pdfIn PDF document text
    • http://www.protectakoteasia.com/ckfinder/userfiles/files/84944902994.pdfIn PDF document text
    • http://www.halpellet.hu/userfiles/files/dilejufuwatak.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f6bb33a5c97---xufisodoga.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/6047b1359dd77cc4063544ff4b40f6f8/janunetanovokavepiruxoxij.pdfIn PDF document text
    • http://aaz.sk/editor_uploads/files/20003341682.pdfIn PDF document text
    • http://www.thebetterinsurance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b790f719a4---46664747134.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608028fa22fd5---89861644742.pdfIn PDF document text
    • http://presssimayeshahr.ir/pic/file/28337680585.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087fb390a2c1---nobapep.pdfIn PDF document text
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/047175414a1a04f07d2fc47faa8d6ef4/gezisotuxigomulilono.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_off0000cfd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFD0 11080 bytes
SHA-256: df9fa35af5046b2b405a3116e4c4e4118927fd355d7028f1b9393c1b67e82b03
font_01_sfnt_off0000e9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000101c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C8 17024 bytes
SHA-256: 291ae0567f5c40c785b8288183067ac29c6ab1bf36852069e0b5d48e520b4aef

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