Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c319312a3e1d957…

MALICIOUS

PDF

82.5 KB Created: 2021-09-09 10:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 2ec59e2fde5171de767bc6c1792d75b8 SHA-1: 600a7f111b562de68e616e1d5ee124bac8ed688c SHA-256: 9c319312a3e1d9578c73ee642c4428884207888efbe19aa06bbbb721adeef08f
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains a link farm hosted on disposable domains, with one URL pointing to a compromised WordPress upload directory. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common tactic to evade initial security scans.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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 http://managhantasala.net/mailuserfiles/file/81623999095.pdf In PDF document text
    • https://kalashad.com/userfiles/file/masikaluvenojorovobu.pdfIn PDF document text
    • http://allefrgycg.news-read.com/upload/files/20359094860.pdfIn PDF document text
    • https://feniks9.ru/ckfinder/userfiles/files/tikuverinemelit.pdfIn PDF document text
    • https://cqc-material.com/app/webroot/userfiles/files/salumozidarasonumunikama.pdfIn PDF document text
    • https://maconlux.lu/userfiles/files/81259553992.pdfIn PDF document text
    • https://www.audioclinica.pt/wp-content/plugins/super-forms/uploads/php/files/mbo80k1c6h3govdkbi99vc0cmq/49122825002.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/78569111913.pdfIn PDF document text
    • https://wegofa.com/userfiles/file/fegisuro.pdfIn PDF document text
    • http://abwcoliseum.com/uploads/files/4560714939.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132ce2e18483---larulofomesafumasanisive.pdfIn PDF document text
    • http://jrpst.pl/userfiles/file/77898407962.pdfIn PDF document text
    • http://seto.cz/uploads/31436088648.pdfIn PDF document text
    • https://hometeamcorp.com/images/usr/15891551342.pdfIn PDF document text
    • http://marthomaiticherukole.com/userfiles/file/poluluvivemaselofuzagubi.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/sowodifujujajuxulusamojom.pdfIn PDF document text
    • http://commissioncollectionlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/14458529436.pdfIn PDF document text
    • http://boekenwinkelindex.nl/images/uploads/28453888897.pdfIn PDF document text
    • http://primethailand.com/ckfinder/userfiles/files/nelofigowuwofedaf.pdfIn PDF document text
    • https://limpjet.com.br/wp-content/plugins/super-forms/uploads/php/files/f0f6319dc10e3cbdfff33db2f73df73f/koviki.pdfIn PDF document text
    • http://dioblina.eu/userfiles/file/68661391492.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/60935218777.pdfIn PDF document text
    • http://siciny.pl/userfiles/file/47607595616.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=dls+19+download+hackPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000df79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF79 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF790 10444 bytes
SHA-256: 4dd8d74ae16dfd7f30675b7e594a0b90d50b1a963a686b2ca08281c50002d652
font_02_sfnt_off00010f49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F49 17384 bytes
SHA-256: b26a9d5ff383029a0c550924cca6a76bad28f7668f5d74eb37f890a4f8abb0b2

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