Malicious PDF — malware analysis report

Static analysis result for SHA-256 941731dc1a0f5c6a…

MALICIOUS

PDF

83.5 KB Created: 2021-06-08 16:46:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-12
MD5: cff36355b0259401faf8ca18d61239ba SHA-1: 5218fddc13d43331379a7f9878a3bb6aa460cea2 SHA-256: 941731dc1a0f5c6a5e948c6a843c165e059ee8fd380e1ab1939b9b36dbffde53
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ketchas.ru/uplcv?utm_term=brawl+stars+new+version+mod+apk PDF link annotation
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/5s8msp0klf9idlb2taph9j0546/5398127376.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/e37331f343201060d0b7f3d5eab495d9/pipit.pdfIn PDF document text
    • https://bkht.vn/userfiles/file/23507400482.pdfIn PDF document text
    • https://divinesacredshakti.com/wp-content/plugins/super-forms/uploads/php/files/3c58c713e5578120cf2547e5d0a0986d/kuxiragabinexesufodejep.pdfIn PDF document text
    • http://beloit1962.com/clients/8/83/8368a4f838dea3176655029ae9e337da/File/88891485411.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/leq8e57evr511lkijgloded6q5/55908909390.pdfIn PDF document text
    • https://estidevelopers.com/wp-content/plugins/super-forms/uploads/php/files/fe50c2740a5876209420c7344e7f9634/2806238744.pdfIn PDF document text
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b161a5ca6c3---lodoporobujovudakaxopisu.pdfIn PDF document text
    • http://www.homefacelifters.com/wp-content/plugins/super-forms/uploads/php/files/9f8614fe157182813d0126bb78602349/20347100155.pdfIn PDF document text
    • http://scheiden-maassluis.nl/uploads//file/13996224757.pdfIn PDF document text
    • http://www.morenoroofing.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ca71a6ac2---57882283823.pdfIn PDF document text
    • https://acronimocostanzo.com/userfiles/file/jejojafixopixarajo.pdfIn PDF document text
    • http://hanhthien.net/uploads/file/powugadomewubuworik.pdfIn PDF document text
    • https://vmkstroi.ru/wp-content/plugins/super-forms/uploads/php/files/7327affc6fb796b593977a16c67b6944/gibilexuzirerez.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f22e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22E 2880 bytes
SHA-256: 619a44e8b5c2a2d3fc0e18259d8022938ad4f8b30552901bc68dc41c3d0f2ef0
font_01_sfnt_off0000fc6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC6C 5372 bytes
SHA-256: 6d701098a5fdd5f3efd3a97bceda68ba5f74427925a4fcb224efaf294d60ae88
font_02_sfnt_off00010eac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10EAC 1800 bytes
SHA-256: 51ebeec29509b87aa858d500e37ac8853184703d07d1f913ce36d8e1dc7764c0
font_03_sfnt_off0001173a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1173A 12096 bytes
SHA-256: a2c63b3d762bf2d23aa3e1e07e286f4d8ac5128fb4c2b4f0e6b39c746fb35768

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