Malicious PDF — malware analysis report

Static analysis result for SHA-256 f000adf2cae320c7…

MALICIOUS

PDF

87.0 KB Created: 2021-09-23 01:12:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 0ccdac664276a2275c1fe21b6aafb5c4 SHA-1: 0463613d8cb58a1d3bd7c4e73c3d9410c9094e01 SHA-256: f000adf2cae320c73529cf733dd73a2fcea6c9c2fbf76b83043b441784e6f5e7
156 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs and link farms pointing to compromised WordPress uploads and disposable hosting, suggesting it's designed to redirect users to malicious sites. The presence of multiple compromised CMS upload links and UTM term redirectors reinforces the phishing or malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://philabc.ru/uplcv?utm_term=minecraft+pe+free+download+1.17 PDF link annotation
    • https://ketgate.eu/wp-content/plugins/super-forms/uploads/php/files/291cbcb06c53249fec5d30630bcd8206/gexugipatorotozejet.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/16139077db2db4---29272423486.pdfIn PDF document text
    • http://kapelski.pl/userfiles/file/bekir.pdfIn PDF document text
    • http://zamel2.pl/userfiles/file/zusidugageke.pdfIn PDF document text
    • http://discoveryenglish.org/wp-content/plugins/formcraft/file-upload/server/content/files/161421cac16053---tibewazog.pdfIn PDF document text
    • https://sproname.com/files/userfiles/files/63740990628.pdfIn PDF document text
    • http://innospectrum.eu/hirlevel/file/26463686029.pdfIn PDF document text
    • http://abbuffalowings.com/uploads/files/vozaroribepalikatatumuw.pdfIn PDF document text
    • https://postele-z-masivu.sk/ckfinder/userfiles/files/popexul.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/uht4k6n2maakq67aibh8l15aqm/72132559558.pdfIn PDF document text
    • http://ufcnagykanizsa.hu/userfiles/file/3541313282.pdfIn PDF document text
    • http://locthanhwindow.com/img_duhoc/files/xogudav.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614b21a886710---pofetinegewobosumomivi.pdfIn PDF document text
    • http://licausi.it/userfiles/files/23673789743.pdfIn PDF document text
    • http://adimhukuk.com/resimler/files/bujujawamipubalo.pdfIn PDF document text
    • http://fermobkorea.com/userfiles/file/20210917153807.pdfIn PDF document text
    • http://narnivet.com/userfiles/files/tisogasolixekavamepalapad.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/files/82422206828.pdfIn PDF document text
    • http://giaexploring.it/userfiles/files/73737433840.pdfIn PDF document text
    • http://awkontrakt.pl/ckfinder/userfiles/files/kepadupomezibezovakuwe.pdfIn PDF document text
    • http://ingmarcofaedi.com/userfiles/files/wepalikubesazazefu.pdfIn PDF document text
    • http://topoint.net/userfiles/fckFile/20210912090332.pdfIn PDF document text
    • http://demo755.webbazaar.com/uploads/61511561548.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://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_off0000ea0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA0D 19520 bytes
SHA-256: cdeb638410f6ece6c52571d7c132ae168a51c3ce8bfdfa873c243cfe23bcbee5
font_01_sfnt_off00011d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D18 10692 bytes
SHA-256: a75c43f35e796b99da33c295ebaff8e853acc8a0a2c78fb183a5ad0f21931dd6
font_02_sfnt_off000135de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135DE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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