Malicious PDF — malware analysis report

Static analysis result for SHA-256 9abbe3795202ef71…

MALICIOUS

PDF

87.1 KB Created: 2021-06-27 11:02:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 932304616d941ccb223605cd23954f97 SHA-1: e2cd42ad082f34c4c005e39b6d64ecef338b949d SHA-256: 9abbe3795202ef717bd3c372fc0af737072637e78c7ca7867a013e03e43b0e47
156 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 links pointing to compromised WordPress sites and disposable hosting, suggesting it's part of a link farm designed to redirect users to malicious content. The presence of external URIs and link farms points towards a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://irlanc.ru/uplcv?utm_term=parrots+and+macaws
    • https://sharidendesignasphalt.com/wp-content/plugins/super-forms/uploads/php/files/47cfc6c47999d8fcdc49780f77671df5/39027104051.pdf
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f5fcbb19e8---82908412708.pdf
    • https://armagedonspedycja.pl/files/file/xinatu.pdf
    • https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/nbdk8n0lc04nco32tdt6mc2q5p/32244371411.pdf
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/bd88c4d4fb9212b1c65415e929ef96d6/popakutagafepexofiwa.pdf
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16093b3f4b91e8---56723325479.pdf
    • http://nnk.gr/wp-content/plugins/formcraft/file-upload/server/content/files/16080d832f231f---36890675783.pdf
    • http://duoctruongxuan.vn/userfiles/image/file/57830831495.pdf
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/qkbnlcg3i5p8l4974j0qaq6il7/supapa.pdf
    • http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b046d404fc8---zijuzesabupukidevetoju.pdf
    • https://www.marbelitesa.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a998aede0a6---61572184309.pdf
    • https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/eaa7a4cea3c8e69952ef619e31621d69/kujotegonafafofa.pdf
    • http://structurecreative.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce0cb9dd42---17230309447.pdf
    • http://adabaskimerkezi.com/upload/file/gawunajawaxepizese.pdf
    • https://dansobentre.net/uploads/file/7845675550.pdf
    • http://iqlacpro.vn/emotive/upload/files/sodaju.pdf
    • https://thepetrichortouch.com/wp-content/plugins/super-forms/uploads/php/files/s0q1rli67rg152bk4h943n50r7/53924605980.pdf
    • http://aftckwt.com/uploads/file/vegusuneni.pdf
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16096b43af0149---99388587535.pdf
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/skafik8f2moniibnqtfg1fua0c/bujozuridobofofavanekuwev.pdf
    • http://edgecs.net/documents/tokodaduduxubigaputare.pdf
    • http://akcjonariusz.com/UserFiles/file/zusolefusifute.pdf
    • 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://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_off0000f30c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF30C 16792 bytes
font_01_sfnt_off00010b23.bin
6f9e57c5b06b69c44a22c873281a71a0cfede28ff608c5fa624b2bfd5a7921ed
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B23 10348 bytes
font_02_sfnt_off00012294.bin
670b50355c3f32de703a4d7f60ba5c0684f552ab747d9caf640f3090f5065888
pdf-font-stream PDF embedded font (sfnt) at offset 0x12294 17140 bytes