Malicious PDF — malware analysis report

Static analysis result for SHA-256 324974c1f3644cd8…

MALICIOUS

PDF

77.8 KB Created: 2021-09-20 23:02:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: f6a7a9356ab1b720a93064c482a61145 SHA-1: 873d4c8cf0e6344f594707858dfe9082065d5e2a SHA-256: 324974c1f3644cd8e612c1a468ff9bc2699b2971c1831507590be1d9411606c1
146 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 external URIs pointing to various domains and an IP address, suggesting it is designed to redirect users to malicious websites. The presence of multiple disposable links and UTM parameters indicates a phishing or scamming attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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=clock+wallpaper+pc PDF link annotation
    • https://netwindowvn.com/uploads/userfiles/file/butekimidipaxu.pdfIn PDF document text
    • http://140.121.125.49/ckfinder/userfiles/files/20210916_041508.pdfPDF link annotation
    • https://hiddencliff.kr/FileData/ckfinder/files/20210909_0A22BBEAFACD51E5.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1613485f0826a6---98999706420.pdfIn PDF document text
    • https://dnm.tw/uploads/files/202109040132214559.pdfIn PDF document text
    • https://renteci.com/imagens/file/91919939675.pdfIn PDF document text
    • https://apc-algercentre.dz/ckfinder/userfiles/files/nixenonezami.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1612f29e94bb04---92409287453.pdfIn PDF document text
    • http://cmtsport.com/pliki/tuvupigagitug.pdfIn PDF document text
    • http://kgmda.com/upload/files/18271540648.pdfIn PDF document text
    • https://coopinproject.eu/ckfinder/userfiles/files/borovemajasexitularef.pdfIn PDF document text
    • http://officeharbor.com/pdtInfo/pajebigosipetobupakevu.pdfIn PDF document text
    • http://doluhosting.com/calisma2/files/uploads/gesozukokewujenebapig.pdfIn PDF document text
    • http://sporteambiente.it/ckfinder/userfiles/files/lufanodoluguwikogeteka.pdfIn PDF document text
    • http://clinicaveterinariacene.com/userfiles/files/70137072036.pdfIn PDF document text
    • http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/83mcbve68ghkh7utrlp0952p3l/17897629580.pdfIn PDF document text
    • http://erfaspot.com/resimler/files/35107633557.pdfIn PDF document text
    • http://streetnn.ru/data/upload/ck/files/wunudisifub.pdfIn PDF document text
    • http://appartementslisa.it/an3_Uploads/file/41151097783.pdfIn PDF document text
    • http://dinobajka.pl/Upload/file/dalota.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFB 10116 bytes
SHA-256: 2470e34584604c3bb5309b4fe3c3a7ad0e5a87e7b7a25903421ea64f87142486
font_01_sfnt_off0000e2c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C4 17984 bytes
SHA-256: b2e385d436dca0bd9ef1b4f33e83dc4ba39dff3661593d10918109924fe2223d
font_02_sfnt_off0001118d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1118D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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