Malicious PDF — malware analysis report

Static analysis result for SHA-256 eca18216c8f4166a…

MALICIOUS

PDF

78.1 KB Created: 2021-09-02 17:00:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 03be661bf281fb55a1adc8b6dbd7d3b9 SHA-1: a0cbdd6bfe1eead267dc62466d1703b110e50c70 SHA-256: eca18216c8f4166aec51f2ba4ab72900a34dbd23147b9b7ae44435a7b27baf07
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier indicating a high probability of maliciousness. It contains numerous links to external websites, many of which are hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure indicate an attempt to lure users to potentially harmful sites, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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://wastran.ru/uplcv?utm_term=radix+x96a+programming+manual+pdf PDF link annotation
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/4ff39207fc6eeac43a020fe40fd7c095/vopigojagazedegedip.pdfIn PDF document text
    • http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c639f203d72---mivezunijapukasujuk.pdfIn PDF document text
    • http://bahattinburyan.com/userfiles/file/32853778140.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/7cdddadc91b6e7df231318534f2a33e2/33363948411.pdfIn PDF document text
    • https://open-call.fr/uploaded/files/5647436405.pdfIn PDF document text
    • https://resonanceacteurs.nl/userfiles/file/24329911077.pdfIn PDF document text
    • https://imapcb.org/wp-content/plugins/super-forms/uploads/php/files/78clblfa0crfno2hgl21com516/43531920458.pdfIn PDF document text
    • https://economiadecomunion.net/ckfinder/userfiles/files/zalamezujivetatetiv.pdfIn PDF document text
    • http://audiomaster.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea5d6b00a7---fizamavemeresodalifagubik.pdfIn PDF document text
    • http://www.drivingschool-brno.cz/files/files/biziraninaxodevumomili.pdfIn PDF document text
    • http://www.contal-farmer.com/uploads/files/mexiredajefenevuwog.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/fekuwivujebobawuwekituka.pdfIn PDF document text
    • https://atvatextile.com/upload/ckfinder/files/62148362950.pdfIn PDF document text
    • https://eitmedu.in/ckfinder/userfiles/files/kozizi.pdfIn PDF document text
    • https://choiceenergynetwork.com/wp-content/plugins/super-forms/uploads/php/files/5959105fe56c5c481df0281beeba4861/fiboginenipav.pdfIn PDF document text
    • https://digitaldaya.com/imagenes/file/10553116941.pdfIn PDF document text
    • http://jualumnitoronto.com/editor/uploadfiles/kizopogukoborebukixufaje.pdfIn PDF document text
    • https://cdmsig.com/ckfinder/userfiles/files/52963272990.pdfIn PDF document text
    • https://scanclean.bg/upload/ckfinder/files/tinutawek.pdfIn PDF document text
    • http://tpdw.pl/userfiles/file/suxazenileg.pdfIn PDF document text
    • http://allycatering.com/userfiles/legavufixozisewitu.pdfIn PDF document text
    • https://alpinebadmintonacademy.com/ckfinder/userfiles/files/18789936328.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/vetafuxiposojorig.pdfIn PDF document text
    • http://www.520amis.com/upload/files/juxijozefonotizajamatap.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_off0000c972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC972 18104 bytes
SHA-256: f206ea305929b187d98ec60e6cf2e15f8116d2f914e9aa38fa1ee068d7fc715a
font_01_sfnt_off0000f8f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8F2 11028 bytes
SHA-256: 47debd6b411745ee3b8247255c8d85ea81a32b1d24204abb35ba3c4e53711081
font_02_sfnt_off00011240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11240 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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