Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eae58c9bc7a9f2c…

MALICIOUS

PDF

86.1 KB Created: 2021-09-01 14:14:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: d7490e72cf66bdb08f42e03d3f2705fb SHA-1: b8732c59d704bf9a46fe57f8edbbf0db5f3b54f3 SHA-256: 0eae58c9bc7a9f2c6e1e6be01a3ca8925e7095049e10c0ae0d43aa1662f94448
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, hosting numerous PDFs on compromised WordPress sites. These links likely lead to further malicious content or phishing pages, indicating a phishing or malware distribution campaign. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9938

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 https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/f4bcc8fc42694d64feb280426b7f8090/vixoteboruwolabiberixu.pdf
    • http://townsendrogersfamilyreunion.com/clients/9/91/912616e09393d205379ff76530a10a1f/File/zesusawiwudiwilapow.pdf
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612d9de5a2d11---tarodagujolifofudopenu.pdf
    • https://enkaotomatikkapi.com/depo/sayfaresim/file/xobakegewuli.pdf
    • https://digitaldaya.com/imagenes/file/68565420144.pdf
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081b6dc8cc55---59678323172.pdf
    • https://auf.vn/wp-content/plugins/super-forms/uploads/php/files/b09ss78p7oqu81lff7su1vaao2/7169865941.pdf
    • http://progetec.org/userfiles/files/desenutavisodezifirirona.pdf
    • https://www.energetisch-therapeut-estie.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606caf649935e---66205865176.pdf
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f459d08f88---pixenofuxuxedolafarenoge.pdf
    • http://www.socalgreatwhite.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a890470b5---20553790809.pdf
    • https://www.ogblfrontaliers.fr/wp-content/plugins/super-forms/uploads/php/files/thhjsadc5pi6qo88466mtfm1jc/bomezavoke.pdf
    • http://abwmarlboropike.com/uploads/files/tutidopazuw.pdf
    • http://ac-kenigsberg.ru/files/file/fozusow.pdf
    • http://brlairport.com/images/file/kerolifitolorodale.pdf
    • https://www.bouwenaaneensterkwerkgeversmerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16094d358d4f9a---22984566222.pdf
    • http://studiocariola.com/userfiles/files/wejusejesuxi.pdf
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/gomci2ss5v740ajubud48ugml6/sakalarujoxuzuvovozogon.pdf
    • http://ikcem.org/userfiles/file///35174818925.pdf
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/160864d4550d85---6342979366.pdf
    • https://sancarspune.com/wp-content/plugins/super-forms/uploads/php/files/a30d6fbfa1206c5928f68160e2e64402/24292345616.pdf
    • http://kagoshimakojintaxi.com/userfiles/file/tonezanufani.pdf
    • https://audit-advisers.com/userfiles/file/zivudujimidafusufisuduw.pdf
    • https://komunalno-vrgorac.hr/files/81047862595.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=steps+in+cartoon+character+making
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d3a3.bin
0e4cde3d5bdd5452960de995a4807c8da4ec665155a9812e2f8e54e6c49b7878		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD3A3 16448 bytes
font_01_sfnt_off0000ea7d.bin
d7d1d4a7cfb35933b761d8444ec46fd635879d2ef94d2ca362061090909132df		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7D 10940 bytes
font_02_sfnt_off000103a7.bin
85d807e88634e3b5e6d3a3fdab7f4c72e13c119814d7bbc8f09fda890280e0a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103A7 17680 bytes
font_03_sfnt_off000131b2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131B2 16792 bytes

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