Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d977cdc8214c19…

MALICIOUS

PDF

76.6 KB Created: 2021-09-19 15:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: f34fc49c116b7ba52e7bc00d0416fca1 SHA-1: be0ecc4f3ffa30fb89f839ef54a2e83f99d13163 SHA-256: 30d977cdc8214c19525c1a7f09697f8367cd58f4f30f5cb5ab61438cf966b410
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF was flagged by ML classifiers and ClamAV as malicious. It contains numerous external links, many pointing to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users. While no scripts were explicitly extracted, the PDF structure and link farm behavior suggest it's intended to lead users to malicious sites for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://mptradingcompany.com/userfiles/file/75554265765.pdf In PDF document text
    • https://ce-mi.pl/uploads/userfiles/files/sopigufirorive.pdfIn PDF document text
    • http://biirbeh.mn/images/content/file/37314944779.pdfIn PDF document text
    • https://ms2gacor.com/contents/files/90492996616.pdfIn PDF document text
    • https://ketex.com/trcgp/ckfinder/userfiles/files/boxaxaremes.pdfIn PDF document text
    • http://schokoladenbrunnen.de/idata/95217466727.pdfIn PDF document text
    • https://citrasas.com/ckfinder/userfiles/files/jufetefewilotekuzasad.pdfIn PDF document text
    • http://karthikeyanjayaram.com/userfiles/file/45574971265.pdfIn PDF document text
    • http://obrienbuilders.com/userfiles/file/xisunejirusavivanexom.pdfIn PDF document text
    • http://www.cargeacrew.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16132ef1981e8c---mulesisofixibefimagasapi.pdfIn PDF document text
    • http://perfect-gallery.com/userfiles/file/53176252346.pdfIn PDF document text
    • http://weighlessthisyear.com/ckfinder/userfiles/files/roxusena.pdfIn PDF document text
    • http://huijingweb.com/upload_fck/file/2021-9-13/20210913160101673553.pdfIn PDF document text
    • http://www.fonfe.com/uploads/files/bipevitolozotixunepexef.pdfIn PDF document text
    • http://aromaonly1.com/yamituki-n/uploads/files/10838622180.pdfIn PDF document text
    • http://sarljarry.com/userfiles/file/64662721418.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/ibebeccrsgejrpq5addbj0mc33/tasutikijabumuv.pdfIn PDF document text
    • http://misosmile.com/upload/editor/files/pogikujuteluzepasaj.pdfIn PDF document text
    • https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/dd852b616076d85adeddebe1f19b7cb6/53305467679.pdfIn PDF document text
    • http://gonvvama.net/filespath/files/20210906110514.pdfIn PDF document text
    • http://jts-electrical.co.uk/ckfinder/userfiles/files/83282028697.pdfIn PDF document text
    • http://teenmag.cz/userfiles/file/49557873650.pdfIn PDF document text
    • https://www.jemelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/16139c3c43fb25---37950329598.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=subway+surfers+mexico+city+mod+apkPDF 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_off0000c47f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC47F 11340 bytes
SHA-256: 7186b55b237bfee7143d6ff4db91fef2254b58bcb3632d2211107ee31615cde3
font_01_sfnt_off0000df24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF24 17492 bytes
SHA-256: 0e1521452024647d02efe286922bd5fb5bcdda76b0ad97a3a14802659c91a9b5
font_02_sfnt_off00010ca5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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