Malicious PDF — malware analysis report

Static analysis result for SHA-256 eddc5349e2083488…

MALICIOUS

PDF

83.2 KB Created: 2021-09-03 23:54:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: e01f966fa96105aefd90144572ef49bf SHA-1: 2560681e1411cf684ab11443b146b0afaeaa77ac SHA-256: eddc5349e2083488a46e6e5b819418bfa954c2b04521f2f6ba14bf6c9ef4bdb1
176 Risk Score

Malware Insights

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

The sample is a PDF file flagged by multiple heuristics as malicious, including ML classification and ClamAV detection. It contains numerous embedded URLs, many of which point to compromised WordPress sites or link farms, suggesting an attempt to distribute malicious content or phish users. The 'SE_ENABLE_LURE' heuristic indicates the document likely instructs the user to enable macros or editing, a common tactic for malware droppers.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 7

  • 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.
  • Macro/content-enable lure medium SE_ENABLE_LURE
    Document instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
  • 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://medvor.ru/uplcv?utm_term=excel+vba+manual+calculation+on+one+sheet+only PDF link annotation
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/d5ce7589f92757f319926b3cd0c848c3/87464868657.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/52739810753.pdfIn PDF document text
    • https://zweiund40.com/wp-content/plugins/super-forms/uploads/php/files/abqfkjidpl4137dbrjdle1b5gv/78480104840.pdfIn PDF document text
    • http://www.etoiles-recrutement.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d1cdeca0fbf---xokuvagevip.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16093b2773f6e7---jupekirogobevigifil.pdfIn PDF document text
    • https://lakeshoresmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/n5fm4g45voffut184ecc2ckct4/70616823708.pdfIn PDF document text
    • http://cn-biyoute.com/d/files/gekulelofasanixaxif.pdfIn PDF document text
    • https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/1609832af5a7a8---girajotebajorujodeti.pdfIn PDF document text
    • http://sigep60s-ncbeta.com/clients/44785/File/58754786029.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608748c7130c6---18896822635.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/28172724379.pdfIn PDF document text
    • https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c7eed3b397---64505952750.pdfIn PDF document text
    • http://flemingdecal.com/uploads/assets/file/41595576393.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607e5cc1d30e6---86752622280.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/nejetuvolitizes.pdfIn PDF document text
    • http://dolekkoyum.com/admin/UserFiles/file/3457548519.pdfIn PDF document text
    • http://osullivanspressurewashing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160acf61d9d00a---16627237977.pdfIn PDF document text
    • http://emachn.com//data/attachment/file/80037876600.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c25b5150ff---nogetitevoka.pdfIn PDF document text
    • http://studiodugnani.it/userfiles/files/nibepetipatejel.pdfIn PDF document text
    • https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611d6c7c81716---vifojazivixusiparuxeza.pdfIn PDF document text
    • https://latework.cz/soubory/88772620398.pdfIn PDF document text
    • http://www.redactordecontenidos.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160bd01c7119f8---54307900828.pdfIn PDF document text
    • http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b3e7c54db00---52834020869.pdfIn PDF document text
    • 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://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_off0000dfad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f7c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7C4 10900 bytes
SHA-256: 4e52cc1ccd85f3a8cd567a68a8708f5432c7359c429588e4c212479d3d38f18f
font_02_sfnt_off000110dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110DC 18832 bytes
SHA-256: 5d7583310856b88644c10f0e4ab5c9e7e8afd72e37ae96251c777c79ac374e40

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