Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d3a3b563d195b02…

MALICIOUS

PDF

95.9 KB Created: 2021-09-03 19:20:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 321ef4c9d5171196608d9076a978d007 SHA-1: 97e7c94cbec9cab4cf21ecb8144be605921820e3 SHA-256: 5d3a3b563d195b02e57ea95b09a974a678b989bc6ba4c583b29543c60c771ac3
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, some of which are associated with compromised WordPress sites or disposable hosting. The primary purpose appears to be directing users to potentially harmful content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

Heuristics 6

  • 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.
  • 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://archism.ru/uplcv?utm_term=descargar+guia+pokemon+platino+espa%C3%B1ol+completa+pdf PDF link annotation
    • http://ziconiavip.com/uploadfck/file/4199268036.pdfIn PDF document text
    • http://soldresold.com/Shradhdha-Mehra/soldresold/final/ckeditorimage/files/gebewenav.pdfIn PDF document text
    • http://prociweb.hu/sites/files/file/58439032432.pdfIn PDF document text
    • https://ncsccalgary.com/userfiles/files/82010382980.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/ab8bf4888da152bd12cca42a87b09490/47283841177.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/babozutogigijipemejivite.pdfIn PDF document text
    • http://laxycoffee.com/upload/files/bujuvewiwib.pdfIn PDF document text
    • https://alsterparkett.de/wp-content/plugins/super-forms/uploads/php/files/bb50i6oq3gq5c339bu7k4uqpf9/79310148621.pdfIn PDF document text
    • https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/874790d5197fc553facb745e1468238d/61177254616.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/fo7646ar0et4p911ris9vum1e2/zalajewiwev.pdfIn PDF document text
    • https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/160e0fe508b6a5---sapaxojufejabenux.pdfIn PDF document text
    • http://cafehinglung.com/uploads/files/97263653719.pdfIn PDF document text
    • https://emprenderem.cl/files/12758879475.pdfIn PDF document text
    • http://spearmanhsreunion.org/clients/e/e1/e1754705b4c076d7cd520c5e9e79ed07/File/sozasadusimupatukulaxi.pdfIn PDF document text
    • https://www.temsilcisitesi.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607986d5852e0---davonodemepu.pdfIn PDF document text
    • http://thedewakohchang.com/image/upload/File/utigonuzez.pdfIn PDF document text
    • http://csc0535.com/userfiles/file/20210807160305_aahvob.pdfIn PDF document text
    • http://isotech.si/uporabnik/file/21801732009.pdfIn PDF document text
    • https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/db09ed0a558ddc2e14b52c3d6f18552a/69650248437.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/dbdf77d9027099951c50d05e701bb8fb/44012331072.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fd7dc4210d---2597071914.pdfIn PDF document text
    • https://prikolnaya.com/wp-content/plugins/super-forms/uploads/php/files/a7213d8244da29b5391d30f0f84d778c/24570398864.pdfIn PDF document text
    • http://chinocorporatechallenge.com/clients/6216/File/zilija.pdfIn PDF document text
    • http://be1971.com/clients/a/a1/a19be2fc4cf8b198b52f296748481ce5/File/goxunok.pdfIn PDF document text
    • https://kaxtongroup.com/home5/maxconne/public_html/kaxtongroup/assets/images/newspostimages/files/91286487827.pdfIn PDF document text
    • http://fcraregistration.com/UploadedData/file/23111665571.pdfIn PDF document text
    • http://thepducphat.com/upload/files/13872116634.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_off000106cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106CF 20824 bytes
SHA-256: 5b7a22e743f99d246f9b6dcc49f2076244ba53e191602edc50665637b52bba4c
font_01_sfnt_off00013c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C80 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15497 11360 bytes
SHA-256: c4fa763b26ac2594c1b63c8a3caf5dc124793340573ed74c0bd7cce18cd3355b

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