Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e1a101b39250614…

MALICIOUS

PDF

76.1 KB Created: 2022-03-31 03:37:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-09
MD5: 1712c7796874c8e993cefda2694b089a SHA-1: ccdabf9407404c42fff067dd1f59bc11d3fcb7ef SHA-256: 5e1a101b392506143a327fe59948915a29e1df6b8752bdf06d41d59a6f12c01f
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF file was flagged as malicious by both ClamAV and an ML classifier. It contains a large number of external links, many pointing to compromised CMS upload directories, suggesting a link farm or SEO manipulation tactic. The document body text, while truncated, includes phrases like 'How to do due diligence on a business', which likely serves as a lure to encourage users to click the embedded links. No scripts were extracted, but the primary attack pattern involves directing users to external, potentially malicious, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://www.cir.cloud/wp-content/plugins/formcraft/file-upload/server/content/files/16211b656251c2---72420015858.pdf In PDF document text
    • http://ozhelalikram.de/resimler/files/kabotobitiziw.pdfIn PDF document text
    • http://agenturamotivace.cz/uploadfiles/file/mojebobubogepobawemagiwo.pdfIn PDF document text
    • https://zobujopexa.weebly.com/uploads/1/3/0/9/130969678/kidejinewas-bewuros-nuzebowaven.pdfIn PDF document text
    • http://www.vitrierbxl.be/wp-content/plugins/formcraft/file-upload/server/content/files/16201b39280b4c---54143812511.pdfIn PDF document text
    • https://rekifunesivi.weebly.com/uploads/1/3/4/4/134404589/luvosikomomapim.pdfIn PDF document text
    • https://kanoritixuvu.weebly.com/uploads/1/3/4/8/134874131/2215be7d6.pdfIn PDF document text
    • https://mosejibufo.weebly.com/uploads/1/3/4/4/134437632/mizekozobaku-gebevatokexil.pdfIn PDF document text
    • https://lidafeli.weebly.com/uploads/1/3/4/6/134683499/didimavujamo-nejuzujalovax.pdfIn PDF document text
    • http://synowka.pl/galeria/file/zoxodolomodifapewav.pdfIn PDF document text
    • https://tavadubamik.weebly.com/uploads/1/3/4/4/134473349/jubefaw.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/xawajidufidikogixo.pdfIn PDF document text
    • https://gefatute.weebly.com/uploads/1/3/5/3/135345711/wafugolevo.pdfIn PDF document text
    • https://tulivugid.weebly.com/uploads/1/3/4/6/134607321/koxosenomub.pdfIn PDF document text
    • http://crislbd.com/public/admin/assets/ckeditor/kcfinder/upload/files/9160682949.pdfIn PDF document text
    • http://metamorfozyayincilik.com/userfiles/file/sobegiw.pdfIn PDF document text
    • https://thermocalnepal.ramjanki.com/ckeditor/kcfinder/upload/files/libetudubovirudulapefefu.pdfIn PDF document text
    • https://lerizizevu.weebly.com/uploads/1/3/4/3/134314130/sodije.pdfIn PDF document text
    • https://xaroduzorosu.weebly.com/uploads/1/3/1/3/131398324/xiluxupijebub.pdfIn PDF document text
    • http://pmdrecycling.com/wp-content/plugins/formcraft/file-upload/server/content/files/1620349537ce54---41816718088.pdfIn PDF document text
    • https://lovig.co.za/YmrXLWy8?keyword=how%20to%20do%20due%20diligence%20on%20a%20businessPDF 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 extracted file (font_00_sfnt_off0000c7a9.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c7a9.bin)

Related samples 4

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_off0000c7a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A9 16456 bytes
SHA-256: 8fb04a0491c015e124736b8c2bafdb40e8401bbc170101b03c2e1394e7c285ab
font_01_sfnt_off0000f240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF240 10760 bytes
SHA-256: bed3f1d92d7c9e1f9ffb05b00800fa3f1f770f69b3a49f3425c5ba278332aa70
font_02_sfnt_off00010aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AEC 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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