Malicious PDF — malware analysis report

Static analysis result for SHA-256 09fd5d5f15a67e66…

MALICIOUS

PDF

90.0 KB Created: 2021-09-20 02:32:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 542de8930263bca82d99db78dc6412d0 SHA-1: 6a3a61a82aba5787a28d2ca09011a51f2075ac44 SHA-256: 09fd5d5f15a67e66ffaffe6bc387e381129bc5d5efde0ee8f59db1cb6532c52f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to compromised CMS upload directories, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of an attempt to redirect users to malicious sites, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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 https://smidgel.ru/uplcv?utm_term=my+hero+academia+watch+online+sub PDF link annotation
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613fdeeba85b1---xorolopupozefifaxofabapun.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16146da0945d61---70748017144.pdfIn PDF document text
    • http://pegasomeeting.medcoast.net/ckfinder/userfiles/files/lixoxibutezomiwemitapi.pdfIn PDF document text
    • http://mabifitness.it/userfiles/files/7841970104.pdfIn PDF document text
    • http://jerseybankruptcylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/sexakojemijaxozodofo.pdfIn PDF document text
    • https://eminentland.com/admin/userfiles/files/58535551310.pdfIn PDF document text
    • http://feuerwehrobrigheim.de/upload/files/13654159355.pdfIn PDF document text
    • http://espicycooking.com/files/file///mivomo.pdfIn PDF document text
    • https://toliveinchristjesus.ceosale.catholic.edu.au/application/third_party/ckfinder/userfiles/files/vefuxomodeji.pdfIn PDF document text
    • https://funbugs.ie/userfiles/file/fuwuzikozazenatu.pdfIn PDF document text
    • http://www.specemc.ru/upload/files/1125835147.pdfIn PDF document text
    • http://massvt.sk/editor_uploads/system/files/puvijuxigimaz.pdfIn PDF document text
    • https://ppntassone.it/dati/upload/file/53386379749.pdfIn PDF document text
    • http://apothepharma.com/upload/files/romuvepusafu.pdfIn PDF document text
    • https://relans-nn.ru/images/docs/file/66997025150.pdfIn PDF document text
    • http://reyazahmad.bscsaoner.in/ckfinder/userfiles/files/perudomefifuxufepejid.pdfIn PDF document text
    • http://worldsocialistpartyindia.org/ckfinder/userfiles/files/mugewagizonaf.pdfIn PDF document text
    • http://horizonpestservices.com/userfile/najilugiziti.pdfIn PDF document text
    • http://www.polni.si/Images/files/norudedabidomun.pdfIn PDF document text
    • https://www.hotelamoha.it/wp-content/plugins/formcraft/file-upload/server/content/files/16136672bd534b---72318396330.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16138751bbca90---76573125547.pdfIn PDF document text
    • http://bandenplaats.nl/cmsimages/file/lijobilisibasulegig.pdfIn PDF document text
    • http://hoangduy.vn/vn/files/99679541600.pdfIn PDF document text
    • http://netflor.pl/upload/File/jojowuvegesudolad.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_off0000f7a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A2 11068 bytes
SHA-256: 79376168a3c593047a46351ecb17cdb482e8dba279057e78792f1eb643e3e35a
font_01_sfnt_off0001114d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1114D 18776 bytes
SHA-256: 83850e0ed626f829d132c1db810a35c3456e6a6affdb8d244c9aff3de5f376c3
font_02_sfnt_off000141cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141CF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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