Malicious PDF — malware analysis report

Static analysis result for SHA-256 c22d146a501a8a01…

MALICIOUS

PDF

70.8 KB Created: 2021-09-25 04:58:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 8ac04cfba3d538a10a9cab8537bd7661 SHA-1: 700b8e895a9caf942cbc032ddcbd19b686db643b SHA-256: c22d146a501a8a0110e59fae09c5ee4fe1423225769d6fba5d4081ceeeb57e0a
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which are hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is likely used to obfuscate the malicious links or to initiate a download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://garglob.ru/uplcv?utm_term=my+hero+academia+two+heroes+full+movie+watch+online PDF link annotation
    • https://bodymart.in/ckfinder/userfiles/files/liwaxowufagerezerumefukok.pdfIn PDF document text
    • https://millvalley.com/wysiwygfiles/file/55132731621.pdfIn PDF document text
    • http://veterinariacomportamentale.it/userfiles/files/nebadopakig.pdfIn PDF document text
    • http://curry-box-deluxe.de/userfiles/file/55527925460.pdfIn PDF document text
    • http://kqcme.yiaiwang.com.cn/upload/files/xuvibafufepa.pdfIn PDF document text
    • https://sunarchegypt.com/userfiles/file/zafemikujawurikojib.pdfIn PDF document text
    • http://newo.ru/files/files/xidorinofowolafev.pdfIn PDF document text
    • http://lawyermo.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/fapujipereluvikivet.pdfIn PDF document text
    • http://kabaretyimpresariat.pl/Upload/file/32721197623.pdfIn PDF document text
    • http://maezawa-jidousha.com/js/upload/files/xebolekabusek.pdfIn PDF document text
    • http://skipjackpoke.com/ckfinder/userfiles/files/11042155985.pdfIn PDF document text
    • https://prospr.fr/ckfinder/userfiles/files/kudiripurulezifividop.pdfIn PDF document text
    • http://wib24-admin.de/uploads/file/sevozobaborukifesefane.pdfIn PDF document text
    • http://minuspk.ru/minuspk.ru/userfiles/file/newedesozakarubatelat.pdfIn PDF document text
    • http://dep14kirov.ru/userfiles/file/norunasisip.pdfIn PDF document text
    • https://northcoteplaza.com/userfiles/file/litajifasokepavavowuwej.pdfIn PDF document text
    • http://www.icf-plant.com/files/file/viseri.pdfIn PDF document text
    • https://zoomkish.com/basefile/zoomkishcom/files/18734713093.pdfIn PDF document text
    • http://samocvet.org/foto/ck/files/pogokeditakur.pdfIn PDF document text
    • https://cafemocion.com/userfiles/file/pojepibidebu.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/65a7c74c05b13553043c95dd06cdf545/73577024334.pdfIn PDF document text
    • https://aldwalia.com/userfiles/files/vimuwokiz.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_off0000af63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF63 11100 bytes
SHA-256: 6ba4a36fa61fdf80975c9f1c5a9bd38ebd5f3d1f35dcc87255173e0a3bfaf661
font_01_sfnt_off0000c92d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC92D 16780 bytes
SHA-256: cf56267e68d8c5101c61299c0e074babc54e10222db3ff6e51012c24995d2999
font_02_sfnt_off0000f375.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF375 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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