Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe34ed3c261a60a9…

MALICIOUS

PDF

97.5 KB Created: 2021-07-26 21:51:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: eb9acc5ea3afc174a4921e6bf612fc38 SHA-1: 074b042c55e5d87d38951b24eea29f1ed88ea97c SHA-256: fe34ed3c261a60a99dede3f1b53f0c3b02279f7a83f52a228f862bbf68ace893
156 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Numerous embedded URLs, many pointing to compromised CMS upload directories, suggest a link farm designed to redirect users to malicious sites. The document body is unreadable, but the heuristics strongly indicate a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9924

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://veronicanealhome.com/wp-content/plugins/formcraft/file-upload/server/content/files/2/1606cb3a96e198---xupubiminalojizanep.pdf In PDF document text
    • http://www.eflox.net/wp-content/plugins/formcraft/file-upload/server/content/files/160bda84daad05---kojuru.pdfIn PDF document text
    • http://rethabise.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160768c623d95d---83746896136.pdfIn PDF document text
    • https://www.mysmilestudios.com/wp-content/plugins/super-forms/uploads/php/files/93258845a4c8a928136106f465dcc940/guniwejowosopeguzorotero.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094f10e90860---fejeriwodebanug.pdfIn PDF document text
    • http://banlinhkienlaptop.com/userfiles/file/671890038.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/4fe64ae2acb6db8e23f18eed96f95bcd/61859329787.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/896c15d853b15cd61454c1d5bb9e8620/wijipopusuvonilorax.pdfIn PDF document text
    • https://bleikss.com/userfiles/file/bifofejuj.pdfIn PDF document text
    • https://www.sir.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160b9f71d74ef5---99271867396.pdfIn PDF document text
    • http://uctodane.cz/UserFiles/File/kegedodosekifenaxodif.pdfIn PDF document text
    • https://247hvac.ca/fabulous1/uploads/files/70310551938.pdfIn PDF document text
    • http://shinserviceodi.ru/wp-content/plugins/super-forms/uploads/php/files/6c5f36bad3341787429cb5e38d26ad5e/6175010652.pdfIn PDF document text
    • http://cainghienbinhduong.com/uploads/userfiles/file/garuguvuterudew.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/nojonagatisukinawu.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160c26170204eb---zupeguwawilu.pdfIn PDF document text
    • http://pilanatofishing.com/home/sandbox/domains/shelter.sandbox.tritek.hk/public_html/ckfinder/userfiles/files/9642349215.pdfIn PDF document text
    • http://ttlengenharia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606f117bf14c1---sixogedokifiduwetotemu.pdfIn PDF document text
    • https://www.shopveriamici.com/wp-content/plugins/super-forms/uploads/php/files/9u4adqbvhgklo8gep033lt11dg/sinodopitegexopilasu.pdfIn PDF document text
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f6b8b79cb---55905523152.pdfIn PDF document text
    • http://nakatka.com/files/file/sadenolatesofijujujifa.pdfIn PDF document text
    • https://stollerco.com/testingsites/advantage_aviation/assets/media/file/26749757736.pdfIn PDF document text
    • http://dbcasagayathottam.org/assets/uploads/cms_images/files/burusijevemudisop.pdfIn PDF document text
    • http://dreamcatcherltd.com/userfiles/file/suluzipukudekonivefazilub.pdfIn PDF document text
    • http://www.alquilerbares.com.ar/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6ad297e78---zuwinitifi.pdfIn PDF document text
    • https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/1db384e4fe9363c24c7bbe120f25a2b6/17456768641.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=ejercicios+resueltos+de+permutaciones+con+repeticion+y+sin+repeticionPDF 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_off00011275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11275 18968 bytes
SHA-256: c88fb6bb2af54a5bd59446c38f24d7aa2b5a85f4a37871e83b67b588e2c5061a
font_01_sfnt_off000142fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x142FA 11000 bytes
SHA-256: dbf329e53d262a898795329c6ee24e0de23d2168007f00c31befed24e8c5e8a8
font_02_sfnt_off00015c87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C87 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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