Malicious PDF — malware analysis report

Static analysis result for SHA-256 9035d112190b6be5…

MALICIOUS

PDF

82.3 KB Created: 2021-09-08 17:33:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: a0de85a021d4848ff5e7074bcc368d9f SHA-1: 350f2ef6ee82afeeeb9d5d4e1420c2c8b0197d50 SHA-256: 9035d112190b6be549d3a05f804d1655dfba3b65f475ca5a92922f21f6145c32
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high ML score and ClamAV detection as a phishing trojan. It contains a link farm pointing to various domains, some of which are hosted on compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of external URIs and a link farm indicates a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://codecs.ro/images/file/70854954597.pdf In PDF document text
    • https://winpoasia.com/ckfinder/userfiles/files/95890342394.pdfIn PDF document text
    • https://cashcruis.ru/wp-content/plugins/super-forms/uploads/php/files/ccd4abe89de0d0fc3b5033cc80a0ab98/zoxegi.pdfIn PDF document text
    • https://alpinashop.rudy-ra.com/files/gitubifixibitogigevose.pdfIn PDF document text
    • https://renhedc.com/uploads/files/202109060746554027.pdfIn PDF document text
    • http://studioagronomoserragiotto.eu/userfiles/files/179433651.pdfIn PDF document text
    • http://crimesla.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/27431070571.pdfIn PDF document text
    • https://excellencetogether.com/img/files/file/96673725361.pdfIn PDF document text
    • http://www.communityheroesproject.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613383b35b4b9---razabanivemetojanamoba.pdfIn PDF document text
    • https://journeypeople.cc/wp-content/plugins/super-forms/uploads/php/files/2d2d82f1076a25d3f379548852ba1b04/57678142645.pdfIn PDF document text
    • http://tainanrup.longi.tw/uploadfiles/files/20210907_110125_7237.pdfIn PDF document text
    • http://oroblupiscine.it/userfiles/files/kaxavobo.pdfIn PDF document text
    • https://nutritie-metabolism-sanatate.ro/app/webroot/files/userfiles/files/24341373817.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/febbf51ac2f8a744175ccafda671f13e/sutagav.pdfIn PDF document text
    • https://hgb.se/filer/file/17389318693.pdfIn PDF document text
    • http://rtm-plus.com/ckfinder/userfiles/files/nivexor.pdfIn PDF document text
    • http://ulsantour.com/FileData/ckfinder/files/20210908_911CF9A1EEA53ACB.pdfIn PDF document text
    • http://sushinamu.com/uploads/files/pimesesowovuxijuja.pdfIn PDF document text
    • http://atdawnwelift.com/userfiles/file/rimofomamesoti.pdfIn PDF document text
    • https://drhuanghair.com/uploads/files/202109071533021986.pdfIn PDF document text
    • https://carcable-bg.com/uploads/pictures/files/zuzidovo.pdfIn PDF document text
    • https://melnikhouse.com/userfiles/file/48890386285.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136eab943e6f---20122408714.pdfIn PDF document text
    • http://unionasset.net/file_upload/spaw_upload/file/20210902014034.pdfIn PDF document text
    • https://spheresignal.com/app/webroot/userfiles/files/3845352700.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=british+gas+bill+example+pdfPDF 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_off0000dbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBC 11016 bytes
SHA-256: 8dc96435de9a513e61bc51e0dd897af7766d667fbfda55e96bb49687b423d2a2
font_01_sfnt_off0000f4f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D0B 17724 bytes
SHA-256: 0d5563c83eb400dd76b8f2f9bda6188fc6ba35c1c530b083c8e3e374f81587fd

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