Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6585e1c78277a79…

MALICIOUS

PDF

74.1 KB Created: 2021-09-14 12:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: b6f241942f47648013052469dc80e96c SHA-1: 1051d33dd2cec880f71a3201a5d6a96faa68562f SHA-256: e6585e1c78277a79beff88fd543f42888a0caa027f839faf99006e04c3f28540
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to external websites, many of which are hosted on compromised or disposable domains, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to exploiting vulnerabilities or directing users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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://crysiq.ru/uplcv?utm_term=hsmtmts+season+1+123movies PDF link annotation
    • http://wabasnb.com/files/fckeditor/file/213444837261323f94d7432.pdfIn PDF document text
    • http://chokmanee.com/userfiles/file/zirakamaxuwan.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1613a44eae533d---16396895694.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e39954ce47---15640788795.pdfIn PDF document text
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/7f0513e0dbc9f52152fb72ae3bb63089/wisoselifudugavijudivip.pdfIn PDF document text
    • http://satunatc.ac.th/ckfinder/userfiles/files/dawefofibivusarufodaja.pdfIn PDF document text
    • http://ogledalata.bg/uploads/pages/files/jasevofagutidasifutolisat.pdfIn PDF document text
    • https://www.diktu.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b29fb17bfc---dosirebaxopezebefid.pdfIn PDF document text
    • https://silverlabpupsforsale.com/userfiles/files/likesoperewa.pdfIn PDF document text
    • http://gidromall.ru/img/uploads/file/vubujaj.pdfIn PDF document text
    • http://lnianemarzenie.pl/userfiles/file/kusunibifezorevusotofotu.pdfIn PDF document text
    • http://japan-railpass.info/images/blog/file/gijavodajara.pdfIn PDF document text
    • http://szkolka-wiercioch.pl/files/file/fitovixatebidu.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/161307bdf675b7---81553838569.pdfIn PDF document text
    • http://heninrealty.com/userfiles/files/mobasodapixutubebiwub.pdfIn PDF document text
    • https://gpagroup.in/wp-content/plugins/formcraft/file-upload/server/content/files/1613c033bb8493---xamegode.pdfIn PDF document text
    • http://thsport.dk/userfiles/file/ruxowatofuwunud.pdfIn PDF document text
    • http://partnercable.com/files/21062820536.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132cd44ade84---81873752254.pdfIn PDF document text
    • https://www.netcorp.hu/data/editorfile/zizovusapavivuriwexewafif.pdfIn PDF document text
    • http://chafewyuok.handysociality.com/upload/files/wowujanokejoziwikeko.pdfIn PDF document text
    • https://www.greenlakecruises.com/ckfinder/userfiles/files/bezurufogotava.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 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC038 16476 bytes
SHA-256: 008b202f6ecc245f6e29240d6e267543f5d4a03b4f73b64ea336c7085542fff0
font_01_sfnt_off0000eac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000102db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102DB 10524 bytes
SHA-256: e1ed155520cc65054ae3e036aef3abc0b390eba244baf7510941e5376382fbac

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