Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5f569c4a682aef…

MALICIOUS

PDF

81.5 KB Created: 2021-09-05 09:35:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 1322286acb0dc2cb20b0c7343294a8b1 SHA-1: e26d5b106a979f15fb5e0d440b9c338e07b91daf SHA-256: ce5f569c4a682aef0e8d2b71ccbee0aaa5c2f92d0a0c6851f7d34dfd36d24349
176 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 numerous embedded URLs, many pointing to compromised WordPress sites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of an IP address literal in a URI further increases suspicion. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/160c5127b813ed---19217905237.pdf In PDF document text
    • http://simonide.org/userfiles/file/gowifebilinoxejarivama.pdfIn PDF document text
    • http://flomojapan.com/upload/files/3353369791.pdfIn PDF document text
    • http://selfmadefilms.nl/userfiles/files/budixurimapa.pdfIn PDF document text
    • http://soluzionebenessere.eu/userfiles/files/nememunitarif.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/d725620d0d7499c8f081a8134d516f63/musezebu.pdfIn PDF document text
    • http://shipagents.nl/uploadfiles/file/60976987264.pdfIn PDF document text
    • https://msr-hudsonproperties.com/wp-content/plugins/super-forms/uploads/php/files/50a67d543ac57902f25e7b432dd4d2bb/ferawapafotonej.pdfIn PDF document text
    • https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/ef5118a2a3d5faa0e2e08349f3495c43/44801000056.pdfIn PDF document text
    • http://hfnhsw.com/upload/files/2736870451.pdfIn PDF document text
    • http://basaritarim.net/admin/editor_resim/file/kupuz.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfa66412050---fimenakosaxi.pdfIn PDF document text
    • https://merohamro.com/ckfinder/userfiles/files/fekure.pdfIn PDF document text
    • http://jamoncup.es/wp-content/plugins/formcraft/file-upload/server/content/files/1608fffc5ac2bd---72127452286.pdfIn PDF document text
    • http://kuresi-kaitori.com/upload/content_pic/files/19512360137.pdfIn PDF document text
    • http://vizit-k.net/uploads/editor/files/naxukopofagolewumagi.pdfIn PDF document text
    • http://mtecommerce.it/public/news/file/89601660176.pdfIn PDF document text
    • http://ptichile.cl/userfiles/file/69646578510.pdfIn PDF document text
    • http://140.121.180.103/ckfinder/userfiles/files/zijurudojelix.pdfPDF link annotation
    • http://cuuhoatudong.com/upload/files/11960010441.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/160eddeadf38ce---vugapi.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085f8d3ede02---tawobilafopobifijutemaf.pdfIn PDF document text
    • https://oiweld.com/wp-content/plugins/super-forms/uploads/php/files/1707f61a4219540fde70ec9fb1d3085e/rasikagojaroxagituxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/S30rS-6n6vg/uplcv?utm_term=manual+for+brother+sewing+machine+cs6000iPDF 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_off0000d8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8F2 17384 bytes
SHA-256: 64010e11bfa5336d92262b5a5c607b74402c86db1d1b1e3f0f5dabec71480744
font_01_sfnt_off0001052e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1052E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011d45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D45 11392 bytes
SHA-256: 975156122975d1d9e71d51e711696a6e58050cf30e1c7ee98bb801047cb482b7

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