Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae289ed384213875…

MALICIOUS

PDF

80.9 KB Created: 2021-08-25 18:06:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 49094b059d71060cdc52725baa798eac SHA-1: 54c3160289741160b9b55e7fb7d23cd6599f8704 SHA-256: ae289ed38421387589bd90ec0fad9040a040de1990fced3a393bf7875c6755c0
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS upload storage or disposable hosting, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://sattamatkapatti.com/userfiles/file/vetivava.pdf In PDF document text
    • https://www.chinacimctrailer.com/wp-content/plugins/super-forms/uploads/php/files/8faf2a5df7a4ec6667371e9022bda21d/1647812856.pdfIn PDF document text
    • http://hoigolfbinhthuan.com/users/files/57970614025.pdfIn PDF document text
    • https://castilloexterior.org/ckfinder/userfiles/files/wowagipuvenedoxavuvevuta.pdfIn PDF document text
    • http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb6440e4e1---nefijusopafolelevavaf.pdfIn PDF document text
    • http://chocoenglish.com/_UploadFile/Images/file/jekapezatijotopovi.pdfIn PDF document text
    • https://supermagnum-bg.com/userfiles/file/xideber.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ec4d4554948---domilefegopewijadivuler.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210719_65377C46AA0A5D9A.pdfIn PDF document text
    • https://pablohernandes.com/wp-content/plugins/super-forms/uploads/php/files/bdd371fc5c3d129190ed66e54026ffed/15084187345.pdfIn PDF document text
    • http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160985f2fdeb29---48041614560.pdfIn PDF document text
    • https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/3c96fb271fe014520cd427b1f9d080a5/10493496672.pdfIn PDF document text
    • https://allmassage.net/upload/file/20210528104959.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e2a9f15c6---94942396891.pdfIn PDF document text
    • http://projectbudapest.hu/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea3d9058f4---12846328507.pdfIn PDF document text
    • http://winhazel.com/indigo/ckfinder/userfiles/files/54522922407.pdfIn PDF document text
    • http://hanasushimenifee.com/uploads/files/25422542581.pdfIn PDF document text
    • http://shsuorui.com/uploadfiles/fckeditor/20210708/file/16257023325559.pdfIn PDF document text
    • https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/1hi24l7vvbkjc90bvd3uujs6sa/89612225950.pdfIn PDF document text
    • https://aslimitada.com/userfiles/file/temurejamobipajas.pdfIn PDF document text
    • https://almoheetmanpower.com/public_html/userfiles/file/70328206965.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070f278a0daa---91923132413.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=jackfruit+seed+for+facePDF 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_off0000d9b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B6 10500 bytes
SHA-256: 04cefeb68dd8b540e0e430ab1fcca528538478734ed5589c37f30ea89ab0aba4
font_01_sfnt_off0000f1d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000109e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109E6 16356 bytes
SHA-256: 149ddb377b775fd1b4e8c1515ddf0e595d026fc715f8e8c0ed23949aba551535

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