Malicious PDF — malware analysis report

Static analysis result for SHA-256 825499b58cf305cd…

MALICIOUS

PDF

75.5 KB Created: 2021-05-12 13:02:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 322d6d98ba9aa3e5dedd45ba14f6c3f2 SHA-1: 00e044c4f39477c104b5d5fe21840a76e1973f1f SHA-256: 825499b58cf305cd33e7bf75a2f12bede8f43a63435309b22fb433afa8fbe703
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/c54d8f60e89c2a8e0ebabe94e149039b/wenolozipitezupuz.pdf
    • http://www.franklinwebdesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160743f0a3e470---72252757516.pdf
    • https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/93f4p2rvn6v0cunejqqgbc622a/razubimot.pdf
    • http://industrialdevices.in/uploads/79848127790.pdf
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/1sfk0icssddggocp387nt7s5p9/19696516315.pdf
    • https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/752a0191148691e1e0009a9a3784d429/66074320313.pdf
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077e6d255e58---48339740034.pdf
    • https://aadhaarretail.com/administrator/imagetemp/file/rojenamitax.pdf
    • https://husvagnsexpo.se/wp-content/plugins/formcraft/file-upload/server/content/files/1609b12d998da6---46407838416.pdf
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f21587442a---56042640727.pdf
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607e7f8c635aa---dijozilazotopidoj.pdf
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606e7d78292c3---nifogukejinubugazabenen.pdf
    • https://cashmeredreams.com/wp-content/plugins/super-forms/uploads/php/files/cad39719c487e759eea249381852cde9/8279628959.pdf
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee9cd5a8af---50880145757.pdf
    • http://jtour.vn/userfiles/file/puxomifofopukimad.pdf
    • https://aadhaarretail.com/administrator/imagetemp/file/xorogexemirebuzoribiparu.pdf
    • http://www.hkwebdesign.com.hk/wp-content/plugins/formcraft/file-upload/server/content/files/16080ea90b2f6d---kezebokiwaropinidome.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=website+templates+html+css+javascript
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eae9.bin
0edde63ceb3280d07b036f035835932ffd53c711d6241707a682a616f254764a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE9 5460 bytes
font_01_sfnt_off0000fd5e.bin
c93603e453fc239da904fde7583d70e850423a885421df277ebcb7feb83d3574		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5E 10736 bytes

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