Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61bf51c997397f9…

MALICIOUS

PDF

85.2 KB Created: 2022-05-17 01:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: 73de83af2a5e68252eaf10ef96ecf758 SHA-1: 6ccc4309e94383d343640a9cd78f970e46918ec7 SHA-256: b61bf51c997397f9f4927e1426e2ed617579d40d8841c4f2aafd3f335ce01ed2
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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://mifuj.co.za/YmrXLWy8?keyword=how%20to%20install%20drivers%20manually%20from%20driver%20easy%20update%20driver%20free PDF link annotation
    • http://vervesimuhub.com/userfiles/file/44799211727.pdfIn PDF document text
    • https://dakhoathienan.com/users/files/sugekigubol.pdfIn PDF document text
    • http://keacg.com/upload/files/teloperu.pdfIn PDF document text
    • https://www.profiexpo.ru/js/kcfinder/upload/files/votesu.pdfIn PDF document text
    • https://nunebavakagepas.weebly.com/uploads/1/3/4/4/134446468/dobifovobutalesusine.pdfIn PDF document text
    • http://www.hebrewforreadingcomprehension.com/content/32529940949.pdfIn PDF document text
    • https://bowalizixoled.weebly.com/uploads/1/3/1/8/131872289/6705786.pdfIn PDF document text
    • https://finazunaba.weebly.com/uploads/1/4/1/3/141353911/xenidipimubag-wamirotorinifa-nomumifizine-gavekesefaxolov.pdfIn PDF document text
    • https://ssmahavidyalaya.org/lion/uploadedfiles/fck/files/file/18233622738.pdfIn PDF document text
    • https://grafconsulting.pl/Upload/file/8935440665.pdfIn PDF document text
    • https://oddluzanie.net/userfiles/file/budabonen.pdfIn PDF document text
    • https://nobobigo.weebly.com/uploads/1/3/4/4/134403715/c223f89cda.pdfIn PDF document text
    • https://mundolibre.cl/uploads/userfiles/files/84388473086.pdfIn PDF document text
    • https://bonubowagadeki.weebly.com/uploads/1/3/4/5/134506782/mufemutuwakoti.pdfIn PDF document text
    • http://studiocariola.com/userfiles/files/werokebanubopo.pdfIn PDF document text
    • https://safetyhanoi.com/userfiles/file/rixevazujeka.pdfIn PDF document text
    • http://borsasetelsis.cat/admin/kcfinder/upload/files/misagudigomez.pdfIn PDF document text
    • https://ziloxewimufe.weebly.com/uploads/1/3/0/8/130813797/pedosefubital.pdfIn PDF document text
    • https://gukevejulolun.weebly.com/uploads/1/3/2/3/132302942/d94d9d.pdfIn PDF document text
    • https://wijizepaf.weebly.com/uploads/1/4/1/2/141296538/vexaturazid.pdfIn 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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0000e73d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000e73d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e73d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000ff4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF4F 17676 bytes
SHA-256: 1e56a7d0ef9780c09013025aa2dc97852db26ae187e6ccc159599f38e450fa9e
font_02_sfnt_off00012dc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DC6 11016 bytes
SHA-256: 0a7c00c05252ddc61ac04912bb095e3eaabeb5bbac0ed9f54fd461bf12c4ef6f