Malicious PDF — malware analysis report

Static analysis result for SHA-256 0edaae8a1eba4518…

MALICIOUS

PDF

76.3 KB Created: 2021-09-02 08:09:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 0ac342a44325e9bfc6945624de1aecc9 SHA-1: 31c9e01d608f53c978e0352553716bf32cdb8256 SHA-256: 0edaae8a1eba4518d16b7158edb732963a9b1bc4938dd9bdc1a77b5e89cccb8b
156 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains a link farm with numerous URLs, many hosted on compromised CMS uploads or disposable domains, suggesting an attempt to redirect users to malicious content. The presence of multiple external URIs and a link farm structure indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://west-holding.com/userfiles/file/rupetakuzixopabe.pdf In PDF document text
    • https://profbuhotchet.ru/wp-content/plugins/super-forms/uploads/php/files/29d927ccc1567a50d37b8ca3a8de8b0a/38201703229.pdfIn PDF document text
    • http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160a5fc26ef7b8---69444763651.pdfIn PDF document text
    • http://alhouti.com/userfiles/file/zozevubisuxaluwanotuja.pdfIn PDF document text
    • http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d6aaad9b10---62709921293.pdfIn PDF document text
    • http://splogservice.ru/content/file/fijisowigununanudejami.pdfIn PDF document text
    • https://blindnow.com/userfiles/file/dudanojunilenewif.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a724be257---merokugugobosefexeneno.pdfIn PDF document text
    • http://fotofolliasanlazzaro.it/userfiles/files/suvuzijegubagu.pdfIn PDF document text
    • https://lavaecucebrescia.it/file/kuwirajolo.pdfIn PDF document text
    • https://777mto.com/contents//files/pibepezu.pdfIn PDF document text
    • http://gillsandgeckos.com/userfiles/file/jadinuwegiluzon.pdfIn PDF document text
    • https://best-turbos.com/wp-content/plugins/super-forms/uploads/php/files/cc089bf67749d9f6944218c16c4d9aae/ribuzo.pdfIn PDF document text
    • https://www.costaverde.it/wp-content/plugins/formcraft/file-upload/server/content/files/16098323045c19---73317643491.pdfIn PDF document text
    • https://fuchscars.com/wp-content/plugins/super-forms/uploads/php/files/1b0b697ccea38ae89c4e29ea204caa88/94711137401.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7d3a699e76---51562588986.pdfIn PDF document text
    • https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/35a3e952c6ab4ded84f9ee1aac500257/21867123233.pdfIn PDF document text
    • http://gmei.lt/ckfinder/userfiles/files/67988201634.pdfIn PDF document text
    • http://dentalcenterstudio.it/userfiles/files/27865487336.pdfIn PDF document text
    • https://tsegypt.com/file/rerevuguwuzid.pdfIn PDF document text
    • http://www.neoneofitou.com/ckfinder/userfiles/files/zanej.pdfIn PDF document text
    • https://echipamente-scule.ro/userfiles/file/berosaposoxiguzujuguma.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/df35b7f2a8b016b5cc9fd5e39e8efa86/49325947458.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/c5a9dd1cb3492bbdc6493ee7968297d0/32834450122.pdfIn PDF document text
    • http://biometria.pl/photos_fck/file/38776374200.pdfIn PDF document text
    • http://xn--80akazwaeiw.xn--p1ai/editorfiles/file/5097685164.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=bully+words+english+1PDF 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_off0000c7c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C7 16828 bytes
SHA-256: ec57ff618c4774e15a7c8262ee8e8ac64090194ddbc7a12d3db536bd2b90221e
font_01_sfnt_off0000f2d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010aeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AEB 10672 bytes
SHA-256: 3979eb38b8fdfd3e12c6b2b044180bbbfd400ca991c46c3f9573461ca76081f8

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