Malicious PDF — malware analysis report

Static analysis result for SHA-256 06522c2aa699fdcc…

MALICIOUS

PDF

77.1 KB Created: 2021-09-04 15:58:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 07114155a4eacda42241e2be21be5c25 SHA-1: c7089654eaeeb8785e6da5b8ce8e304d4f2c622f SHA-256: 06522c2aa699fdccf65e3c8d2d0c0bd2d3e4b59c060c3b3c2542e8eeef0a9624
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the nature of the links and the PDF structure are consistent with attempts to redirect users to malicious sites, potentially for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9963

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://huntic.ru/uplcv?utm_term=home+appliances+business+plan+pdf PDF link annotation
    • https://mzr-avocats.com/buddha/ckfinder/userfiles/files/nagawikazakarazov.pdfIn PDF document text
    • https://drrajanmahtani.com/userfiles/files/litoxubizajum.pdfIn PDF document text
    • https://eltonltd.ru/sites/default/files/uploads/44270885738.pdfIn PDF document text
    • http://world-green-hope.com/uploads/files/51623322951.pdfIn PDF document text
    • https://lion-trading.co.uk/wp-content/plugins/super-forms/uploads/php/files/meue8jont77tkvm65hfhvhn5v3/72695480368.pdfIn PDF document text
    • https://www.drmarlenebothma.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16131f4aaa7940---35100150269.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/eckda1kbq6sr5u37f4hnf7slm0/64468901525.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607da7c2eb3d2---42740574445.pdfIn PDF document text
    • http://seteo-dechets.com/images/file/21174002065.pdfIn PDF document text
    • http://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/64682916977.pdfIn PDF document text
    • http://studiomanzella.com/userfiles/files/wixuxanefofikatazeko.pdfIn PDF document text
    • http://jar-ted.pl/file/55116220253.pdfIn PDF document text
    • https://sip7.pl/autoinstalator/sip7.online/wp-content/plugins/super-forms/uploads/php/files/9b623a8a6162824a13851ee45862081f/62613892765.pdfIn PDF document text
    • http://ahzycw.com/upload_fck/file/2021-9-4/20210904150107961186.pdfIn PDF document text
    • https://www.swx.global/wp-content/plugins/super-forms/uploads/php/files/d3e9fec2efd15eca85513fecd3a5cc3c/nitilobumufizuzugukeliwev.pdfIn PDF document text
    • http://xn--80aa5alfu.kz/file/74556401435.pdfIn PDF document text
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/546c790ba345a523a37ed40828d72aca/lanora.pdfIn PDF document text
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/940dce9b9a99d00bd3074c503d684da6/89201249599.pdfIn PDF document text
    • http://toyotarent.kr/FileData/ckfinder/files/20210616_70265EFFC545B072.pdfIn PDF document text
    • http://vizit-k.net/uploads/editor/files/97206450139.pdfIn PDF document text
    • https://adikkeempat.com/contents//files/kupalibofapefejirexibivug.pdfIn PDF document text
    • http://soflocops.org/clients/83264/File/ganom.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_off0000caa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAA4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e2bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BB 10812 bytes
SHA-256: 9a98434d20db57357455e6d5a056a676bde0b815aba8b0db863432c33ff5ae3a
font_02_sfnt_off0000fb4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4D 17116 bytes
SHA-256: a6e61944d9aa68f54307c33c4392d544154e86726cd3e347ad66e0f927df041e

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