Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e750a14721114a3…

MALICIOUS

PDF

84.2 KB Created: 2021-09-13 11:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-01
MD5: d138a769195251d8dc079bb214627697 SHA-1: 4d0d6278b733ff408d95f58f35e399ce4f66ec78 SHA-256: 0e750a14721114a380f8a247c1eceed4ae7d469556ae0c6807c22c407d73ae52
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://molenat-energies.fr/molenat.com/images/editor/file/43441459308.pdf In PDF document text
    • https://cfi-registration.org/buzzboxgift/img/userfiles/files/dotupegewuxe.pdfIn PDF document text
    • http://majstrissmt.eu/www-data/file/96137313513.pdfIn PDF document text
    • http://heyumpnd.com/userfiles/file///motixuduxinolulepamekukom.pdfIn PDF document text
    • https://kimcert.net/E/file/51773685722.pdfIn PDF document text
    • https://soccerauquebec.com/userfiles/file/juzagub.pdfIn PDF document text
    • http://igabana.com/upfolder/e/files/20210912094621.pdfIn PDF document text
    • http://tabouligrill.com/ckfinder/userfiles/files/61059138352.pdfIn PDF document text
    • http://snap-drone.com/userfiles/file/woxuxoxun.pdfIn PDF document text
    • https://stradatextiles.com/upload/ckfinder/files/5123677316.pdfIn PDF document text
    • http://rucodelniza.ru/userfiles/file/44049205418.pdfIn PDF document text
    • https://riwg.in/userfiles/file/44324698482.pdfIn PDF document text
    • http://perles-del-beya.com/userfiles/file/tepapovanifafega.pdfIn PDF document text
    • https://digireg.cn/upload/65874477876.pdfIn PDF document text
    • https://www.tzounakos-insurance.gr/ckfinder/userfiles/files/zikikunasobalev.pdfIn PDF document text
    • http://sieuthibongda.net/ckfinder/userfiles/files/kofatumapeko.pdfIn PDF document text
    • https://spyboarcams.com/files/zanaremivaxubiza.pdfIn PDF document text
    • https://bahia-group.com/ckfinder/userfiles/files/17178557304.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/4d40f21d77726172c2bc23003086e91e/40571533427.pdfIn PDF document text
    • http://aunay-sous-auneau.fr/ckfinder/userfiles/files/xakidipow.pdfIn PDF document text
    • http://abwgulfport.com/uploads/files/watuvan.pdfIn PDF document text
    • http://zgic.ru/!upload/files/jeniparumajufiz.pdfIn PDF document text
    • http://ciccioinpentola.com/userfiles/files/92664074678.pdfIn PDF document text
    • https://ehbo-oostkapelle.nl/userfiles/file/xarowekale.pdfIn PDF document text
    • http://mywayrtk.org/userfiles/file/fepexosejaz.pdfIn PDF document text
    • http://namngonviet.com/user-/files/34508690310.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=what+colors+do+you+mix+to+make+the+color+purplePDF 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_off0000e324.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE324 17904 bytes
SHA-256: d17006b80e70bc80a09676918df4e1041a666b11371ba0db88c340e7c218c05e
font_01_sfnt_off000110c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110C4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000128db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128DB 11076 bytes
SHA-256: 247a2832c09747b56e73bd2d2f7ae2a086b87016daaafcbe33ec58ea33a32772

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