Malicious PDF — malware analysis report

Static analysis result for SHA-256 fce02287eea38080…

MALICIOUS

PDF

87.4 KB Created: 2021-08-14 06:19:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-29
MD5: 486f34a295834c354241c4364e1fdded SHA-1: 5d195a8501a522998d9909a8957ab752c6a7b9bd SHA-256: fce02287eea380809ca7c11a78ed3297a3ab8b4fbd8e30126072ed2d1817058f
156 Risk Score

Malware Insights

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

The PDF contains numerous links to compromised websites, identified by heuristics such as 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to download further malware or engage in phishing. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/44df9ee120cd9cb38d4ec7303926d105/81907804446.pdf In PDF document text
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b343fc2312d---lurupojufumamuzagix.pdfIn PDF document text
    • https://armenia4d.com/contents//files/tabedepelosagune.pdfIn PDF document text
    • https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/28d9d9da9340a3092f79d378fb7b588d/38287656378.pdfIn PDF document text
    • http://theopenhouseclub.com/wp-content/plugins/super-forms/uploads/php/files/95c526db178402ad54e50d8d8045e854/zidejawuluzogekavugaguje.pdfIn PDF document text
    • https://veterinarycarefoundation.org/userfiles/file/xetezosokulowo.pdfIn PDF document text
    • http://sbsinternationalschool.org/sbsisnew/userfiles/file/44579575415.pdfIn PDF document text
    • http://istihdamhaberleri.com/upload/ckfinder/files/mozexoxemeboremuramutaf.pdfIn PDF document text
    • http://yuseigachi.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16115d2c1b626d---sirunefokizole.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/80676899f351958475feef7dcf381d44/99443627952.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d25a616a3d2---12324522019.pdfIn PDF document text
    • https://kawanmto.net/contents//files/devufow.pdfIn PDF document text
    • http://yds-wcv.jp/free_images/files/86284689119.pdfIn PDF document text
    • http://highendschmiede.de/highendfiles/file/juvexego.pdfIn PDF document text
    • https://palcev.ru/userfiles/file/jixizinuvegolimo.pdfIn PDF document text
    • http://aodaibooking.com/FileData/ckfinder/files/20210612_B962F399EAAFAAEE.pdfIn PDF document text
    • http://vdgairconditioning.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160d551c73c80d---73663497.pdfIn PDF document text
    • http://erdivigado.hu/userkepek/file/todagajexe.pdfIn PDF document text
    • https://merydian.pl/nowymerydian/userfiles/file/97976947575.pdfIn PDF document text
    • http://linkingpeople.info/userfiles/file/kafonexaf.pdfIn PDF document text
    • https://dcoderesearch.com/uploads/94536250744.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/6248557937.pdfIn PDF document text
    • https://tortugafilms.ca/adminfiles/file/xirovix.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=alfabeto+ilustrado+colorido+para+imprimir+com+os+quatro+tipos+de+letrasPDF 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_off0000e979.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE979 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001018b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1018B 20880 bytes
SHA-256: b18ded2398b15ce0078e368da7483179a46e619f6ce2a1a4627de959ac57ab7f
font_02_sfnt_off00013368.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13368 11044 bytes
SHA-256: dd7371ac684455ec163dc7a77ccfde41b1c66ead68ae9b5891a45fd8ee9bd2f1

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