Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2d96a1cd8aff453…

MALICIOUS

PDF

83.8 KB Created: 2021-07-08 11:17:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 14bfd309e2b20a14cccb913d597aafd8 SHA-1: 7f7a606793a8264f56982c24b9a811f0233e4822 SHA-256: d2d96a1cd8aff45328629eba78712743dc1621fd94b88e31eb4c836609f0fc37
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised websites and disposable hosting, suggesting an attempt to redirect users to malicious content. The document body is unreadable, but the presence of link farms and the overall detection indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/01m093plkve6msva7vodsckaj4/23755765549.pdf In PDF document text
    • https://gk-termopanel.ru/wp-content/plugins/super-forms/uploads/php/files/45406aa6eec6e83c7e763337353d4785/fulenuzikaxidatumusafawup.pdfIn PDF document text
    • http://lilit-realty.com/wp-content/plugins/super-forms/uploads/php/files/9b9djcbn8rj7uh5mv1fiso75e6/47151696641.pdfIn PDF document text
    • http://bakoca.hu/files/file/42116850898.pdfIn PDF document text
    • https://razredna-nastava.net/files/sudisabex.pdfIn PDF document text
    • http://carneslaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17957176099.pdfIn PDF document text
    • http://industrialdevices.in/uploads/nifokifirunutaxatet.pdfIn PDF document text
    • https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/7291sl2bvn29cbiql45hrb35ll/wabujekogagajijira.pdfIn PDF document text
    • http://bluekeydigital.com/images/pic/file/virobipazut.pdfIn PDF document text
    • https://jclifeschools.org/wp-content/plugins/super-forms/uploads/php/files/b756dce2f1e2d5367804c74562aaff60/xajatunixutakosimipumuli.pdfIn PDF document text
    • http://bjjiffy.com/upload/62772047202.pdfIn PDF document text
    • http://fine-cottage.ru/userfiles/file/39523938558.pdfIn PDF document text
    • http://geredekombiservisi.com/userfiles/file/96215785695.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/16076c7de4b5be---bowezaw.pdfIn PDF document text
    • http://brothersaluminium.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/160a88432d5c9a---46712679635.pdfIn PDF document text
    • http://sugarfree-gelato.com/upload/file/90371076900.pdfIn PDF document text
    • https://netshopnepal.com/userfiles/file/turugowikifidoser.pdfIn PDF document text
    • https://www.enterpriselighting.com/wp-content/plugins/super-forms/uploads/php/files/eee5282757d58fc43f457ce00e25ffa4/59341465012.pdfIn PDF document text
    • https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/8c5bfa12c11840426a2267fa09541f2a/67213266333.pdfIn PDF document text
    • http://ahkjt.com/upfile/file/72377709951.pdfIn PDF document text
    • http://provia-events.de/pics/fotos/1/file/52967249029.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///nunegotikojolabij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=black+in+white+photo+to+colorPDF link annotation
    • 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_off0000e4a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A1 17552 bytes
SHA-256: 5b2e30912d0faa9239dd56b6dc2f500f62ed0ed70909c32facd8a4d6bc01825b
font_01_sfnt_off00011270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11270 10536 bytes
SHA-256: 1b8919f3045b056799f20abe648fbf40765e1d828a539750dc70abf0ff6186fd
font_02_sfnt_off00012a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A72 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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