Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa2f8979f82e56f2…

MALICIOUS

PDF

223.7 KB Created: 2021-06-28 14:04:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 0db409c5f3191c337577445b38b7fa17 SHA-1: d064e3ec793729044bf63745ea2aff1af61b63a0 SHA-256: aa2f8979f82e56f2360810e00404a16b959565f4291a14451cdf77f413d27270
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains links to an SEO redirector and compromised CMS uploads, suggesting an attempt to trick users into downloading further malicious content, likely related to a fake movie download. No scripts were extracted, but the presence of multiple malicious URLs indicates a clear intent to distribute malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9852

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://garglob.ru/uplcv?utm_term=out+of+control+1985+full+movie PDF link annotation
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/71fa0e6t4q9tvg15vbnri7chva/27993743518.pdfIn PDF document text
    • http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/tv8fam65cfn2hl184hn32mq7h3/texarobalidupesofak.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078a30020b8c---zakoxis.pdfIn PDF document text
    • http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b54e26bd969---82631145714.pdfIn PDF document text
    • http://pizzeria-millemiglia.de/app/webroot/img/editor/file/noderopemulinonere.pdfIn PDF document text
    • https://zazilha.com.mx/wp-content/plugins/super-forms/uploads/php/files/54d0f105edc71752a561fecb29aab0fc/kejosifapixesitujetonok.pdfIn PDF document text
    • http://beastyenergy.com/userfiles/file/tovukazufas.pdfIn PDF document text
    • https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/9b771e2d4e4b392b967a89dc77711697/55402801205.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6f00aed356---99563922844.pdfIn PDF document text
    • https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ad6098585---zaxuwewisejapaxaboxenaf.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/62417950757.pdfIn PDF document text
    • https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/6b15ff26dc84a5acd05b97042b6b4116/xezaguratani.pdfIn PDF document text
    • https://socialchangefactory.org/wp-content/plugins/super-forms/uploads/php/files/250c50e899956320b7624c19e0687257/20630032394.pdfIn PDF document text
    • http://aftckwt.com/uploads/file/widomila.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/tfn9slarv8rmnqg58m621v7hoh/vupiram.pdfIn PDF document text
    • https://deedpoll.sg/wp-content/plugins/super-forms/uploads/php/files/b9d4007ad34374c14445018816c350d6/283898180.pdfIn PDF document text
    • http://baigeleather.com/userfiles/file/zakujozejugasikun.pdfIn PDF document text
    • https://traveltokiev.com/wp-content/plugins/super-forms/uploads/php/files/2b9rsisaqfo4r67i7rgutna622/mujixasefopakopabomuguj.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/5915512d55f86bc406bc6f073950cdb3/82228171039.pdfIn PDF document text
    • http://agavietnam.com/img/files/molanaman.pdfIn PDF document text
    • https://medgarlci.com/wp-content/plugins/super-forms/uploads/php/files/9d3fd856c8eebfac24bfcf34adf364c6/zadigidawotidu.pdfIn PDF document text
    • http://gagutp.com/sa_upload/userfiles/file/20210606015035.pdfIn PDF document text
    • https://paron-rebondir.com/uploads/files/golirabutozaju.pdfIn PDF document text
    • http://altiro.nl/home/tjerk/file/17838964516.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_off00030dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30DFE 19416 bytes
SHA-256: e45a9ba9d791a28a6b3695fa136914466047d1df79b5da1adb56652989d6b563
font_01_sfnt_off00033f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33F16 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0003572d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3572D 10920 bytes
SHA-256: e195c7754bae54ec7da7691729249dbfe9df2e9c9e90030d62de9fd106940299