Malicious PDF — malware analysis report

Static analysis result for SHA-256 db2fb374d5654279…

MALICIOUS

PDF

262.5 KB Created: 2021-08-01 05:37:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 693633d107fe41b439d15683cc5492e5 SHA-1: 758c7a3229edd2f3759b1782a8dc5cbb896026bf SHA-256: db2fb374d5654279b88b2beca8a953aec48135f848ff0c673e2c003e8c41ccbe
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting it is used to redirect users to phishing pages or download further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9757

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://cructi.ru/uplcv?utm_term=the+tempest+paraphrase+pdf PDF link annotation
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d459882d---muxojudarokuxozideg.pdfIn PDF document text
    • http://h-st.nl/bestanden/files/9377164182.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/16093077b6d0d3---21081977847.pdfIn PDF document text
    • http://geoodwierty.pl/files/file/xemitixegejobovobefilemos.pdfIn PDF document text
    • http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/82d373b153749241a11c56c30f19bdfc/piwixudiroto.pdfIn PDF document text
    • https://1sis.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607176288ae34---47136345081.pdfIn PDF document text
    • https://www.surajinformatics.com/wp-content/plugins/super-forms/uploads/php/files/8719e9f274d47e534b50f7915654f6e4/sawavakeziziwejofexexi.pdfIn PDF document text
    • https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/hpnlbuok53m8po5don7bl8cq01/riziroderefuxezuja.pdfIn PDF document text
    • http://teknis.it/userfiles/files/supabulerigipubimamejolo.pdfIn PDF document text
    • http://alvirne88.com/clients/71477/File/32613368214.pdfIn PDF document text
    • https://bbensonmft.com/wp-content/plugins/super-forms/uploads/php/files/c3f50bc130b8dfb6d9e663c6d7afaf73/wuvuxomojobijulonisevi.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f2b67085eed---tifisozanujoxevatedepar.pdfIn PDF document text
    • https://terlickodds.cz/www/www/fckphotos/file/52820013664.pdfIn PDF document text
    • http://www.bordadoindustrial.com/ckfinder/userfiles/files/kabamojoxafinuv.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160c8cb4e3bb25---92990430065.pdfIn PDF document text
    • http://bocghebinhduong.com/media/ftp/file/24826956511.pdfIn PDF document text
    • https://preciseenergygroup.com/media/sovomag.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160887fa39675f---josud.pdfIn PDF document text
    • https://2greenchicks.com/wp-content/plugins/super-forms/uploads/php/files/e1689a61be3f2e71fa5663a8c906bbb3/liwasovosizopa.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bc1f42e97b0---41483793697.pdfIn PDF document text
    • http://rdmsrl.it/userfiles/files/58082901049.pdfIn PDF document text
    • http://homespakistan.net/magzine/uploadfiles/file/62713995911.pdfIn PDF document text
    • https://saftanton.dk/wp-content/plugins/formcraft/file-upload/server/content/files/16079d1eca2742---14965666962.pdfIn PDF document text
    • http://www.vegagastro.pl/upload/file/38664345795.pdfIn PDF document text
    • http://nkland.org/userfiles/files/xuxumenibigo.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_off0003ae31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AE31 10364 bytes
SHA-256: 652cf40d7161e3b34e0c8aa7926640e04b520f0f26396b326bd8b90c3585603e
font_01_sfnt_off0003c596.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C596 17000 bytes
SHA-256: e3f4f7c53c03f95700ffdd22c83be2dd492c15da80b1c9a7688a25c3a6eb7760
font_02_sfnt_off0003f17c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F17C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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