Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddb2e5844d6252f1…

MALICIOUS

PDF

58.5 KB Created: 2021-05-06 04:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 579d4375835e84e72268649ba6f279d8 SHA-1: b03be1bbccc0f2f81cfcc0e4145af1ccdfb04692 SHA-256: ddb2e5844d6252f16cd67570211f540333001c1855dae8e762596e2147644552
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous links to compromised websites, suggesting a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier indicate a high likelihood of malicious intent, specifically a phishing or trojan distribution campaign. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest the document's purpose is to lead users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8412

Heuristics 5

  • 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
  • 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://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609336164f501---25380221801.pdf
    • https://www.chartsunlimited.com.ph/wp-content/plugins/formcraft/file-upload/server/content/files/16075008cc318b---62480905802.pdf
    • https://www.ideakliniksisli.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071fbd4dd086---pezupodaxotamuketogo.pdf
    • https://webgirls-studio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ce639caf69---86115372536.pdf
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/8nukbu5ai4a31pslbrfhmq99hl/sedogifudaxekiturajafi.pdf
    • http://www.onekaddy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160786948d75c2---17928806017.pdf
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/f1f953af2f2eed4f3f7c7ddc50b76fba/tisemubun.pdf
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/160703ecc3f1fa---votebodulipozalotagosapi.pdf
    • https://reflexlighting.com/wp-content/plugins/super-forms/uploads/php/files/c42955a7fcef140397939bddc6745036/lunegap.pdf
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608103988c8d4---digumonuxofiladif.pdf
    • http://www.canadiantreasurer.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b6be34e7a5---mifukipovibexonuritofujuk.pdf
    • https://phase1acoustics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b4fa3c229---74500759942.pdf
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bef6ee327d---77440826520.pdf
    • https://c4ir.ae/wp-content/plugins/super-forms/uploads/php/files/fupkt51ioikhm0mjj57mj2s7b3/todivoje.pdf
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/39c483424b150d6c52d705fe6603685c/xorevodotexepijodepilu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/A3Ryygt5BCM/uplcv?utm_term=kermit+falling+meme+template
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dc85.bin
72e284b9e87dc098fab76d9daea1382f5059b40dc72dc945919af0162ec61fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC85 5012 bytes

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