Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ce6166b717cd924…

MALICIOUS

PDF

77.6 KB Created: 2021-10-07 00:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 339dabd916a282e5d0cafae224fca5d1 SHA-1: e836089137367aa92b559534efc5b6e4bee833f5 SHA-256: 5ce6166b717cd92487b9bcefe9a1269ce2830d0925348e19b28900be838cb05d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojan threat. It contains a link farm pointing to various compromised WordPress sites and disposable hosting, likely intended to redirect users to malicious content. The presence of external URIs and link farm heuristics strongly suggests an attempt to lead the user to a secondary malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6206

Heuristics 6

  • 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.
  • 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://swhos.com/upload/files/bavasetuzalafejero.pdf In PDF document text
    • https://paymentor.nl/uploads/file/93473093046.pdfIn PDF document text
    • https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613ddd3deecf8---59360016119.pdfIn PDF document text
    • http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/1af560afbdcd52722c238339e564eecb/61440917125.pdfIn PDF document text
    • https://kaparatt.com/images/File/munubife.pdfIn PDF document text
    • http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/161533f26a3c7b---xiweve.pdfIn PDF document text
    • http://zawodydrwali.pl/app/webroot/userfiles/file/45646035912.pdfIn PDF document text
    • https://turdv.ru/SITE/files/editor/file/remogupusasagev.pdfIn PDF document text
    • https://kueapem.com/contents/files/miwixolinovinukomovuxix.pdfIn PDF document text
    • https://electrodomesticaruano.com/images/ckfinder/files/vuvujupuroxiwugumov.pdfIn PDF document text
    • http://bannhuaduong.net/upload/files/13257177768.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/17a025c0041a02ed0ca32abd1083a746/12799606056.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/a619c78f0bd67b942460f925564e53f7/58826439605.pdfIn PDF document text
    • http://ilkconstruction.com/Images/Media/files/69813822248.pdfIn PDF document text
    • http://studiomilano.eu/userfiles/files/vopupipu.pdfIn PDF document text
    • http://cadelupo.it/userfiles/files/nifoj.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/053165fe242fe0aa7d00765fb9f66233/zitixupubinesefe.pdfIn PDF document text
    • http://leinerpakgelatine.com/survey/userfiles/files/wetuvevisazefawemelemo.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/6ed41da2565ed7814ed0fdf054ff2a10/vifuvebusat.pdfIn PDF document text
    • http://h-p-n.fr/catalogue_dynamique/file/suwonumuwadorokasafe.pdfIn PDF document text
    • https://marupyara.com/fotos/userfiles/file/71362059544.pdfIn PDF document text
    • https://www.gullyracing.it/admin/ckfinder/userfiles/files/gatepim.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/bc0ae8816e2874f44cdf1b9982efab6e/85980995577.pdfIn PDF document text
    • http://ulleungroadtour.com/FileData/ckfinder/files/20210919_DEC2C330830B1B30.pdfIn PDF document text
    • http://www.icf-plant.com/files/file/90335906996.pdfIn PDF document text
    • http://mitsubishilongbien.vn/images/ckeditor/files/veladotajugiper.pdfIn PDF document text
    • http://fecirturizm.com/resimler/files/65769983158.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=balanced+reaction+of+photosynthesisPDF link annotation
    • 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_off0000d175.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD175 10884 bytes
SHA-256: 9d3dbecce7b4cbf4f2104749b7495ca25a5866647563e1cb769a0f90824f4b19
font_01_sfnt_off0000ea95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA95 18056 bytes
SHA-256: e6a0df8281c1faabe7442dcd9dc99df9776f4785fc43fff5e8ac1a362e61f424
font_02_sfnt_off000118ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118BA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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