Malicious PDF — malware analysis report

Static analysis result for SHA-256 29e814c1b40e3151…

MALICIOUS

PDF

78.1 KB Created: 2021-09-05 17:44:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 58cc68bbe7e290959f199f26ab137a8c SHA-1: 871fa79a96e6164659e17f1eb4c4fc6fff7c68a4 SHA-256: 29e814c1b40e31519252fee50e98aad0e0852e7a3e389caea015d5b8bdb74d0a
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that likely lead to phishing sites or further malware downloads. The presence of multiple compromised CMS upload links and disposable hosting suggests an attempt to obscure the ultimate destination and evade detection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://amd-export.com/site/upload/file/lezusunuxubuvinukodes.pdf In PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609f6162bd2a7---kipobadaboxizepo.pdfIn PDF document text
    • http://mhinflatable.com/upload/file/85673937372.pdfIn PDF document text
    • http://playeasypiano.com/resources/fck_images/22558901402.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/160ac1f96210c0---39608210078.pdfIn PDF document text
    • http://yjsyrj.com/userfiles/file/75981334862.pdfIn PDF document text
    • http://jandebruijn.com/uploadimages/files/sojovivaj.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/2f59573e6249f19ffbd393dbf50fa0ce/ganek.pdfIn PDF document text
    • http://arcomproltd.com/userfiles/file/35925536256.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8b468237c9---7375500437.pdfIn PDF document text
    • http://belgium-ex.com/images/blog//file/50435806963.pdfIn PDF document text
    • https://remini.hu/userfiles/file/fipefugodonoreluni.pdfIn PDF document text
    • http://novaserv.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afca783cf83---2739934578.pdfIn PDF document text
    • http://orkoien.com/userfiles/files/tumiburugedojasujijabufog.pdfIn PDF document text
    • http://ahchala.com/img/file/jopijovawufuxipuj.pdfIn PDF document text
    • https://frennphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610d2be00ca28---ruwogopojis.pdfIn PDF document text
    • https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ddd259d7ab---51574039169.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/1g3lu9lthvqf2fsvnid8e7rh0l/rubep.pdfIn PDF document text
    • http://ahrestygz.com/userfiles/files/20210826_024941.pdfIn PDF document text
    • http://waltwhitmanhsclassof1970.com/clients/3/38/385e9ad2c098ba3bcab8db81b262ab1e/File/38251308806.pdfIn PDF document text
    • http://brandnewgoods.net/userfiles/file/8649012204.pdfIn PDF document text
    • http://antichigelsi.it/userfiles/files/wijuvitede.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160745dc754905---soxapatimukunuten.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=like+someone+in+love+lead+sheet+pdfPDF 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_off0000cd07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD07 10780 bytes
SHA-256: 8015ad8110e6e1d088df67b9571babac24fd73986e2e7b922fbc9376fb2501be
font_01_sfnt_off0000e5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fdbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDBC 17400 bytes
SHA-256: 6135899732ecd8957070d96ea1fbf228db92ba8111bfe5dfc46330dbcff15276

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