Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f15fd54272b621f…

MALICIOUS

PDF

96.0 KB Created: 2021-09-02 08:03:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 41369a48127f0da918f5347b2c684cf9 SHA-1: 8d202857f1f8ba4ff858ac8b383fc5c61a408ecb SHA-256: 7f15fd54272b621fa3487058bcb203f1c9e21c42644c3b1827acac4b930c51fa
156 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs pointing to compromised WordPress sites, indicating it functions as a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to lure users to external, potentially harmful, resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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
  • 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://cructi.ru/uplcv?utm_term=sorcery+points+spell+slots PDF link annotation
    • https://urbanplace.me/wp-content/plugins/super-forms/uploads/php/files/c50d0f9a6ca2bdc06d48d84a13853dbe/96520380459.pdfIn PDF document text
    • http://kraljicabih.com/wp-content/plugins/formcraft/file-upload/server/content/files/160828fa8923e4---tuveriwemejuwufuvetagu.pdfIn PDF document text
    • https://phoenixknights.co.uk/wp-content/plugins/super-forms/uploads/php/files/85f35156d8bb0504a2beae5b28a717b6/93672115189.pdfIn PDF document text
    • https://baileyelectrical.services/wp-content/plugins/super-forms/uploads/php/files/tlesuif4aj2gli3ks5qan8gm9p/godev.pdfIn PDF document text
    • https://namratalakhotia.com/userfiles/files/bedewujexip.pdfIn PDF document text
    • http://sammyuriasproperties.com/userfiles/files/mabunir.pdfIn PDF document text
    • http://deficanderel.org/clients/6/67/674a09facce11b7629d390eef9534ff9/File/2769060339.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/639715e73f4fb127482ad68494469bf6/95290492394.pdfIn PDF document text
    • https://x-leather.com/radsportfiles/file/67721715830.pdfIn PDF document text
    • http://emailreceptionist.net/userfiles/file/sulivajavumedegawere.pdfIn PDF document text
    • http://vitali-schulz-eiskunstlaufen.de/userfiles/files/lutimuvulipexifetato.pdfIn PDF document text
    • https://tradingphrases.com/userfiles/files/35264123379.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609233818644d---58901133469.pdfIn PDF document text
    • http://b-solutions.net/userfiles/file/kebotametexuwur.pdfIn PDF document text
    • https://www.idromeccanicasrl.com/idromeccanicasrl.com/wp-content/plugins/super-forms/uploads/php/files/dd9c0f4249caa377b04d1e2a3a5632ff/56624268775.pdfIn PDF document text
    • http://appartenvue.net/appart/upload/images/gimona.pdfIn PDF document text
    • http://hz-kontejnery.cz/ckfinder/userfiles/files/40785766525.pdfIn PDF document text
    • http://sattosushi.com/uploads/files/dojurilefetip.pdfIn PDF document text
    • https://chambredhotes-savoie.com/ckfinder/userfiles/files/9789550218.pdfIn PDF document text
    • https://www.jscorporation.co.in/wp-content/plugins/formcraft/file-upload/server/content/files/16097504295776---xanowosodufapig.pdfIn PDF document text
    • http://waterreducer.cn/d/files/52972604739.pdfIn PDF document text
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/e1d988585117b492f9831670dc84cb8e/sewajonab.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_off0001150d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1150D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012d1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D1F 17704 bytes
SHA-256: dd37a6401651e2a57cea095b4b285b593b3ddcbb3a71f5ebff2fb09b76219d52
font_02_sfnt_off00015b0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B0F 10396 bytes
SHA-256: 53c750d7b756b113947aa2c1f6b4ad40be1a045394aaffa8c863abeefcc5d34a

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