Malicious PDF — malware analysis report

Static analysis result for SHA-256 69fb5812fd00a570…

MALICIOUS

PDF

84.6 KB Created: 2021-09-03 01:17:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: d20bf47cbbf62634f358c9723cf2f2d4 SHA-1: 8d5c679a7ae675aa7e00ce17dd4c4e1b767882a2 SHA-256: 69fb5812fd00a57033d7b10f10ddeeb91a715df10b5461c4100e566c22e7cb1e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating it's a phishing or trojan delivery mechanism. It functions as a link farm, with numerous URLs pointing to compromised WordPress sites and other disposable hosting, likely to distribute further malware or phishing content. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics confirms this behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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 http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612ec385698b5---deruzofufufo.pdf In PDF document text
    • http://babyschultz.com/clients/72285/File/kogodabupomegusejobime.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160e7260d413fb---pumegarelesikivij.pdfIn PDF document text
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a48df69d6d2---55984417052.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7c1413ee34206700b22a56792abd8c63/95760303402.pdfIn PDF document text
    • https://rhodium.vn/uploads/news_file/ropaxokevoli.pdfIn PDF document text
    • https://euroroma-bg.org/files/file/72795137781.pdfIn PDF document text
    • http://braciszewska-klimek.pl/fck_files/file/rowusudarubediveseto.pdfIn PDF document text
    • http://solar-makernavi.com/ckfinder/userfiles/files/66391052165.pdfIn PDF document text
    • https://adlinefor.com/home/webagen/public_html/korn/data/file/povejuve.pdfIn PDF document text
    • http://www.agenbenangbandung.net/file/36528992457.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071b490ca6e3---98334529997.pdfIn PDF document text
    • http://www.lightingandhvacexpo.com/wp-content/plugins/super-forms/uploads/php/files/00cb94496d9c6b81cdb105e35a43cf19/94070150894.pdfIn PDF document text
    • http://www.asslar.de/downloads/puwojot.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/af19a40af6553acf900a36c1eb71cc11/jetagavepa.pdfIn PDF document text
    • http://erfolgsapp.de/wp-content/plugins/formcraft/file-upload/server/content/files/160941fce41cc3---makivedekipuzomewideku.pdfIn PDF document text
    • http://www.altrus.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1609b1e58008dc---tofadodojej.pdfIn PDF document text
    • https://eirai.org/editor/ckfinder/userfiles/files/ruromobuxeposobematojikom.pdfIn PDF document text
    • http://altelaw.com/uploads/image/file/rirukoziforalawa.pdfIn PDF document text
    • http://kowel.com/ckfinder/userfiles/files/1624542313.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160c0dbc8e3289---guruwizoj.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=patwari+syllabus+mp+pdfPDF 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_off0000de61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE61 10744 bytes
SHA-256: bc9a9a7f1a7fbe1d6cca439bd892f53b878db61ffb401ee01140fcdfadfaa731
font_01_sfnt_off0000f6e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E6 20448 bytes
SHA-256: 87a8e2d7e4448ddeaea829b2fde78e71cef48ab6bb591e18f6b0921a8c3d9805
font_02_sfnt_off00012d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D8E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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