Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c47f57ea36c4355…

MALICIOUS

PDF

76.9 KB Created: 2021-06-10 18:44:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 4dd7c77092621b0c3c4a8e4a37c29c54 SHA-1: 2932a90e05838429c0e502311327827e695091ac SHA-256: 6c47f57ea36c435541d181b3d70393f2581266e794ff7e80aa0cf209834e6268
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute malicious content. The primary URL, 'https://garglob.ru/uplcv?utm_term=piranha+hollywood+movie+tamil+download', is presented as a movie download, a common lure for phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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=piranha+hollywood+movie+tamil+download PDF link annotation
    • http://abnicum.com/files/file/40603479263.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1183a8c3c---belejeborilitibewuxenik.pdfIn PDF document text
    • https://energooptima.hu/upload/File/32385138584.pdfIn PDF document text
    • https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/01aa6aee19abd6536c8303d200422e9d/fudozanomadoxevopusolexij.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/sndjdg966pp6ea59ca10npus47/93765884850.pdfIn PDF document text
    • http://beetsom.com/PROGRAM_FCKeditor_UserFiles/file/812949860a8e72aa4850.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/c68a4699f8d5b2557621c92e49229d40/35398957153.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/299chajmpr0t6oi4mscfb230m4/zegosejaduketurojewedib.pdfIn PDF document text
    • https://www.businesswatchguardingservices.co.uk/wp-content/plugins/super-forms/uploads/php/files/1immknbavfp407rbb8pivnd4r5/12410241380.pdfIn PDF document text
    • https://ozmutludokum.com/userfiles/file/dulazujenebazip.pdfIn PDF document text
    • http://xn----8sbpvg0afdbe.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/t8cvi2f6p8sppvip9tr3tjgo84/puxuzup.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/hgpu2cojsekqv9njckgjthia8g/78886379722.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/763ed7d8fc1525b19299e00202fd03ee/63917669742.pdfIn PDF document text
    • https://stijsr.com/userfiles/file/23122116796.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eedf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDF 5140 bytes
SHA-256: b31ed9d44077cfef757ef723c73c71c91413e54f805e51adea1f60afc6be7cdc
font_01_sfnt_off00010047.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10047 11396 bytes
SHA-256: c4df11e7826c2ccf0c41fc94318e8c86da09dd3d774368077ed0567f633eb49b

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