Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a747c1e8987000b…

MALICIOUS

PDF

84.2 KB Created: 2021-09-04 08:14:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: c4a0f28590b906fc8be2733308a8bdc3 SHA-1: 9fd60964232c396c385c8502230e6ef9dd62bf24 SHA-256: 0a747c1e8987000bf7b3e9931008618746de296becf1c50862ab5e3de6667966
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised CMS uploads or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of multiple external URIs and the nature of the links indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9833

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://alwaditrading.com/userfiles/files/63565470167.pdf In PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/16075d47b13285---rurefinanudedit.pdfIn PDF document text
    • https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/5350e6afbe1dfc8d25c1900083a3cb58/84630047531.pdfIn PDF document text
    • http://jnejendomsdrift.dk/userfiles/file/fozumerusolofopurafavek.pdfIn PDF document text
    • http://carriewoodfamily.com/clients/5/5b/5b9f2fb360c4065436fb7fe1267c3612/File/35265640416.pdfIn PDF document text
    • http://www.korayozelguvenlik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088b727a10cb---toworupuwolelozoxod.pdfIn PDF document text
    • http://teleinwestor.pl/userfiles/file/79602312981.pdfIn PDF document text
    • https://singlespeed-switzerland.ch/userfiles/files/56424803853.pdfIn PDF document text
    • http://pc75.net/upfiles/file/1624648444.pdfIn PDF document text
    • http://palakkadtourism.in/ckfinder/userfiles/files/xufugasomom.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161058b32edaa3---55119977885.pdfIn PDF document text
    • https://whatshoulditcostme.com/userfiles/file/93394266013.pdfIn PDF document text
    • https://rzfmuhasebe.com/userfiles/file/24359158361.pdfIn PDF document text
    • http://ototavandosemesi.com/resimler/file/kokukijeba.pdfIn PDF document text
    • https://majubesar.info/contents//files/39006222509.pdfIn PDF document text
    • http://myhomeinparis.com/userfiles/files/jeguwewuvo.pdfIn PDF document text
    • http://nw-line.ru/generic/uploaded/41305304575.pdfIn PDF document text
    • https://www.modianodesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c865054cfca---pijusenirekilowusijomufop.pdfIn PDF document text
    • http://leebyunghun.kr/new/upload/board/files/tugivopumagobunebasumig.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/1301766d2e5d66d4f805ef718e7416ef/gokilagozuzubokidevemado.pdfIn PDF document text
    • http://www.temaricerca.com/entry2013/admin/ckfinder/userfiles/files/negajelobesuwaf.pdfIn PDF document text
    • http://grupposcorcia.it/userfiles/files/durelutavokozitevewem.pdfIn PDF document text
    • https://digitaldaya.com/imagenes/file/9988034094.pdfIn PDF document text
    • http://www.theagentpipeline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091b2a95a356---jiwafun.pdfIn PDF document text
    • http://appletechsolutions.com/userfiles/file/60842711782.pdfIn PDF document text
    • https://mvpartners.be/images/uploadedimages/file/80049458964.pdfIn PDF document text
    • https://ngusacdon.com/upload/files/pevik.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=esercizi+matematica+prima+elementare+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_off0000e6b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B3 16908 bytes
SHA-256: 749e1123b4cc143ee5713239db3e2966835817233214a19a7612029f2c8a2f6a
font_01_sfnt_off0001129e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1129E 10704 bytes
SHA-256: babbaeae5268a29cc2ec195b5705de601f3a14d8f2701bbc007dbba044f92bc9
font_02_sfnt_off00012b2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B2B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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