Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ce7bcdec7b60942…

MALICIOUS

PDF

79.2 KB Created: 2021-09-04 11:20:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 22bbbfd5f794fed91a74c18be818d5b0 SHA-1: 6846398216478feeb6af51e52af5ae0613250fa7 SHA-256: 7ce7bcdec7b609424e65679d7fb77b0a7c055aaa0012c4314f592d967bd19f64
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The presence of external URIs and the overall structure point towards a phishing or malware distribution scheme.

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 http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610a3b8ce87f6---kazebakofuredi.pdf In PDF document text
    • http://smartraoptics.com/fck_filemanager_upload/file/luloxiwif.pdfIn PDF document text
    • https://armagedonspedycja.pl/files/file/37379738918.pdfIn PDF document text
    • http://maxidmum.com/images/upload/fck/file/767549657.pdfIn PDF document text
    • http://coffee33.ru/archive/file/vomemuwowozitibadixuju.pdfIn PDF document text
    • https://neurondevelopment.org/userfiles/file/371217939.pdfIn PDF document text
    • https://thesaddlebank.com/wp-content/plugins/super-forms/uploads/php/files/0vi3094i8d1lkjl9lq9ula37hg/rufevogunovotad.pdfIn PDF document text
    • http://leton.pl/userfiles/file/xibajeta.pdfIn PDF document text
    • http://cuacongtudongbinhduong.com/upload/files/2105072087.pdfIn PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/a94d6e8fc68d873708edd4d90b1b9d95/84431121469.pdfIn PDF document text
    • https://icon-studios.com/userfiles/file/bupikubosonu.pdfIn PDF document text
    • https://www.dyna-tech.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160742793a86fb---79159186686.pdfIn PDF document text
    • https://www.sidertest.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608e38a201e2c---15252382708.pdfIn PDF document text
    • http://tropo-design.com/ckfinder/userfiles/files/62475570709.pdfIn PDF document text
    • https://reifenscho.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c386831118d---gikorezis.pdfIn PDF document text
    • http://uat.ideadunes.com/projects/ideadunes-portfolio-site/wp-content/plugins/formcraft/file-upload/server/content/files/160a594e7c1e37---jeforezizaloji.pdfIn PDF document text
    • http://ajivikafinance.com/userfiles/file/rofanekes.pdfIn PDF document text
    • http://prinsart.ro/uploads/files/32561394627.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/05f353f9cdb55e4f847dacff506e9275/45950810086.pdfIn PDF document text
    • http://kme-kme.cz/files/file/fosedi.pdfIn PDF document text
    • http://showplus.ae/userfiles/files/wanunuj.pdfIn PDF document text
    • https://bodymart.in/ckfinder/userfiles/files/ginanirukokaragowedoraraj.pdfIn PDF document text
    • https://heuresromantiques.com/upload/files/32812361199.pdfIn PDF document text
    • https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/36326250424.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=oreck+xl+tabletop+professional+air+purifier+manualPDF 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_off0000cbce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBCE 18356 bytes
SHA-256: 872f04b930e32d8c9901daa9c4f04783e85549d146a70c7e5b0b283aa2f53a66
font_01_sfnt_off0000fb1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11333 11100 bytes
SHA-256: 5914827f49eb6ef2a274346c1f83c4ae790973f3337f1021f2383e4cc04ea5bc

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