Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed059ce8fbd3f63…

MALICIOUS

PDF

99.9 KB Created: 2021-06-26 03:20:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 9deb870bf846368d71c6c6eb18f1b4b9 SHA-1: 5d0269fce27e577968360ceb078a17ca695c4926 SHA-256: 5ed059ce8fbd3f63eee09c2ef04f8022b86aceb026115b1593e735867e522c78
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The primary function appears to be acting as a link farm, redirecting users to potentially harmful content hosted on these compromised sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/3ae5283caaeb58a36856e54b846c8247/dewaxixafajozim.pdf In PDF document text
    • http://www.primalegal.eu/wp-content/plugins/super-forms/uploads/php/files/oplled442sd629bluqb89ntnn0/88061248589.pdfIn PDF document text
    • https://riverasphotovideo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5b3f8a40fa---tanuzokarujosijasi.pdfIn PDF document text
    • https://www.havanasalsa-dance-tours.com/wp-content/plugins/super-forms/uploads/php/files/c41a64908e63f23b99c403e553ced16f/88020460920.pdfIn PDF document text
    • http://mognational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ef0285bcf3---texaguvulaj.pdfIn PDF document text
    • https://brylka-kfz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b49a0c45ada---941900804.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/db895ddea012e0b76435caa0f540b9da/nadoxi.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c323fe2a2c1---32489533554.pdfIn PDF document text
    • http://cathugo.de/res/wysiwyg/file/49181301161.pdfIn PDF document text
    • https://securitydm.rs/slicice/file/89042067707.pdfIn PDF document text
    • http://wrtour.com/FileData/ckfinder/files/20210530_353C4ECDFE671B02.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160983fe36a0b2---91060487977.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/j9t5ambjjl1v0n4eqjjm8f57i1/kawolaniwatubalanejetabi.pdfIn PDF document text
    • http://qtjdb.com/UploadFile/2021/06/03/file/20210603_042518_161.pdfIn PDF document text
    • https://redaelzaqaziqy.com/userfiles/file/18298444583.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e192c471d---zapigolo.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/vktupfqvn5rc0o1f1bdmv70rda/vivifewajilo.pdfIn PDF document text
    • https://stellabakingcompany.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d137f8c2b4---62402580163.pdfIn PDF document text
    • https://samsungvrvklima.com/upload/ckfinder/files/rajagizufumewadatuten.pdfIn PDF document text
    • https://independentmusicleague.com/wp-content/plugins/super-forms/uploads/php/files/5d90d3c55e938f165a30a12144d348ff/37733171488.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/512fa0a758585c5f0df659a0ffe03d58/2275087852.pdfIn PDF document text
    • https://fruitssupplier.com/app/webroot/img/files/vewekomusavi.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/1233eb342e4a2955d3b8b8b67eab1c30/lusolukiveku.pdfIn PDF document text
    • https://www.glasswindowequipment.com/wp-content/plugins/super-forms/uploads/php/files/a0863f7ec88fd515e03c5f33d2765940/89666886913.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/PmAiG5ZyT-k/uplcv?utm_term=ode+to+joy+piano+numbersPDF 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_off00012015.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12015 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001382c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1382C 11016 bytes
SHA-256: ad9fb229d541b8dd74bb45ad8cf2abc4867a54087a9b991145092df081b24aac
font_02_sfnt_off00015189.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15189 19100 bytes
SHA-256: d930cae7fcab73e63ffc13f0ecdb44c9004a5b4b551475a2455932f79981b70e

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