Malicious PDF — malware analysis report

Static analysis result for SHA-256 defa590f02a631a7…

MALICIOUS

PDF

85.8 KB Created: 2021-07-14 03:31:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 0484dba76d8f67f71837963c84009670 SHA-1: a52b9a0b10b50c54c4fda5e6e1eb08e5e4bc4629 SHA-256: defa590f02a631a75949608886c3455be67e7745cb9ffd2b67a11f531f4a385b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. The document functions as a link farm, containing numerous URLs that point to external sites, some of which are hosted on compromised WordPress installations. The primary purpose appears to be directing users to potentially malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9922

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://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/9b603b21943e42130b1fa1a614114701/77522616576.pdf In PDF document text
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/d3c2f48622613f576ca50aba19eba07a/35067888554.pdfIn PDF document text
    • http://fixafilm.se/userfiles/file/2626238562.pdfIn PDF document text
    • http://saintthomasmonrovia.org/clients/a/a7/a774d5b45fc75aba9c6fcf07501e1e58/File/runadipafutidekewogeful.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c640875b21---57642157654.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/adcf590434d6e0a97dfdae9b3eb23460/nuvevavadajo.pdfIn PDF document text
    • http://inlygiaylynhua.com/upload/files/labanojekoxi.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/3gosekie3crqhhgu5ksk3c1b9u/99131644820.pdfIn PDF document text
    • http://gazosilikatnn.ru/uploads/files/16228877714.pdfIn PDF document text
    • http://yuha.be/_files/file/kewiwujenonowupemakomazor.pdfIn PDF document text
    • http://beveragesgs.com/userfiles/file/38237712789.pdfIn PDF document text
    • http://www.dadosefatos.net.br/wp-content/plugins/formcraft/file-upload/server/content/files/160dae4cfa6839---baxekajuvanunulu.pdfIn PDF document text
    • http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160a18016e217f---kiwanunixeva.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/e06ab5f73a42e5fd7714f119788973ae/limawonikarijagibaki.pdfIn PDF document text
    • http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/734b76cede0f632a2ea49b22858c5166/67526500636.pdfIn PDF document text
    • http://lhs75aa.org/clients/0/08/08eb77d093c5251d787cf05842b4a73c/File/97040447913.pdfIn PDF document text
    • https://vansuloi.com/uploads/userfiles/file/xevovosokalirakenigumetug.pdfIn PDF document text
    • http://liburnia.pl/userfiles/file/benizaxaloxasadise.pdfIn PDF document text
    • https://tehnol.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16096cb9ecb3fb---54846798589.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/c97dce24a624f3ac6e366e0a348b723b/40528096826.pdfIn PDF document text
    • http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072a62475fe2---37813190567.pdfIn PDF document text
    • http://dtcguild.org/clients/80367/File/10569354860.pdfIn PDF document text
    • http://mobilenmr.com/files/files/77259342234.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c21c54c1569ebff9c9d2e28368014e83/vuredejujutazunupalepe.pdfIn PDF document text
    • http://caribsplash.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b55dfc8330d---javisuros.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BkSY9tpko7c/uplcv?utm_term=rrb+d+group+previous+year+question+paperPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d52a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD52A 17100 bytes
SHA-256: 03661ec1f689f869b5d2dc24c8f2871b483691b6805c16a690500c66140ec93a
font_01_sfnt_off00010177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10177 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001198e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1198E 11132 bytes
SHA-256: ccfc9042fbefde99474736f2c031fd2ffab8f470e3d80d209a4f69cbcc48e2f9
font_03_sfnt_off000132f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132F5 16392 bytes
SHA-256: 439f91fc52918ec11de7c10fc66f42d556e3ca0baf24f0cec7590a9fe4e8f18d

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