Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba9c646f10bbfa9…

MALICIOUS

PDF

83.1 KB Created: 2021-09-04 20:54:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 2ecac38f7a58e64bde14b89b12b338d1 SHA-1: ba0b2fba76cb7efdc12e24862bd526a01e336c0a SHA-256: aba9c646f10bbfa94aca33c25bd673beb4ad9bd4ba21c353894937d9379c1cc0
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 file contains a link farm pointing to compromised WordPress sites and other disposable hosting, suggesting an attempt to distribute malicious content or phish users. Although no scripts were explicitly extracted, the PDF structure and URL patterns are indicative of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://www.sesc.com.ua/wp-content/plugins/super-forms/uploads/php/files/dejjls2bi6vfp4b6cqg9egc6m6/7037446631.pdf In PDF document text
    • https://termofriz.rs//files/luzavefatadufuxodamib.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/2c3e33bab347b6331127049775e34209/56575974527.pdfIn PDF document text
    • http://autoset66.ru/admin/ckfinder/userfiles/files/wagatal.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/cacc4bed986239ea1a597ea28158655b/mimawofevuvajifamuroxelor.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9ec36f887---1592742027.pdfIn PDF document text
    • http://thongthien.vn/upload/files/sigekud.pdfIn PDF document text
    • https://arihantgranites.in/wp-content/plugins/super-forms/uploads/php/files/lni3kbmecv7kvhb798evanju82/jubelixodimalivixaluxol.pdfIn PDF document text
    • http://www.mvdisposal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612d56f469dd7---25977522749.pdfIn PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160b477f652bb6---37667149709.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/vk57q5tk140svlnkd8t92ln59b/10924938009.pdfIn PDF document text
    • https://successalpha.team/upload/files/jufevetunipuku.pdfIn PDF document text
    • http://fantalife.nl/userfiles/file/matom.pdfIn PDF document text
    • https://artbynela.com/uploads/file/bawawu.pdfIn PDF document text
    • http://mtprospectbaptist.org/clients/7/74/74f10a8404da00fab064704771972c19/File/12386646069.pdfIn PDF document text
    • https://lenaoyunlar.com/calisma2/files/uploads/rimilagomasudesudilaf.pdfIn PDF document text
    • http://delve-cr.com/uploads/22803412377.pdfIn PDF document text
    • http://bannhuaduong.net/upload/files/novunujofilulojabinut.pdfIn PDF document text
    • http://potlista.com/file/files/24066631519.pdfIn PDF document text
    • https://master.plus/wp-content/plugins/super-forms/uploads/php/files/525fb2604d472122edae264e97770103/3090138238.pdfIn PDF document text
    • http://marcobernini.it/userfiles/files/44361464381.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/mguc1sc6eo6bnv0u3mnslj7r34/fefekobutuzipam.pdfIn PDF document text
    • http://auksozvynas.lt/userfiles/file/xufizatamefovopuxitutaxi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=parker+pneumatic+cylinder+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_off0000df9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF9A 10800 bytes
SHA-256: 82dcbce25f5206bff03eaf47bfb5eb92641382c3f386da128d7196412a48eed2
font_01_sfnt_off0000f878.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF878 17620 bytes
SHA-256: 8f4b464ef4f3e162f77dc743c7d4ca578dbc9cf6b8c8e7cdbafc2d1b1f4fa7ca
font_02_sfnt_off00012657.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12657 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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