Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd47985f78d482c…

MALICIOUS

PDF

86.2 KB Created: 2021-06-11 09:29:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1112005232a1b022a635445680208b04 SHA-1: 1b160d0e9810e313b5a447dcc8f9f4b01326c620 SHA-256: 9dd47985f78d482c14a64d4559659059b52c68ac1f6377c57cedae0ecbbdd0b3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://garglob.ru/uplcv?utm_term=rearrangement+reaction+organic+chemistry
    • http://gramercy-grand.ru/files/file/selubosowosagiretigupiwu.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077c9e1816c4---10777566707.pdf
    • https://rrvchefs.com/wp-content/plugins/super-forms/uploads/php/files/282a460b0bbf258be2e1e3e9ae606ee7/62574152467.pdf
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160b329313f95e---403271009.pdf
    • http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609075b50aaec---parifeda.pdf
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bae08872fd9---balokujegikedar.pdf
    • http://valeneighbors.com/userimages/45396425557.pdf
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/86d2038d082b52db8b722577f6099c6a/53161390812.pdf
    • https://www.ideaklinik.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077133168a8d---jumetavileluwuwadino.pdf
    • https://stpetejazz.com/wp-content/plugins/super-forms/uploads/php/files/hekj4agopmkuvhat4qpsnkr4db/13175578784.pdf
    • https://carstenrath.com/wp-content/plugins/super-forms/uploads/php/files/aglc1gub5agvnnjt7dp51npc7s/lokolemofodup.pdf
    • https://abugfreemind.com/userfiles/file/7772871167.pdf
    • http://bakoca.hu/files/file/gewasokir.pdf
    • http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160aae2266e6ed---lobimawiviko.pdf
    • https://wavesmaroochydore.com/wp-content/plugins/super-forms/uploads/php/files/4t3umokrte7opnokd564h99lat/zinovonawisiroxile.pdf
    • http://www.skupp.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1608d239465d83---warafulalurotinodujage.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fdb7.bin
996be4e6e33ede1597ec50b33060f56d2114723a39f0d7fe12a15453e7c7a535		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB7 5292 bytes
font_01_sfnt_off00010f9d.bin
bf5ab39971b1ef7bbaa853094a2a06209211e51e6d1387a423d2580d3a9b9809		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F9D 11412 bytes
font_02_sfnt_off000135fd.bin
541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501		 pdf-font-stream PDF embedded font (sfnt) at offset 0x135FD 16204 bytes

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