Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebe272166afab5bb…

MALICIOUS

PDF

79.3 KB Created: 2021-09-01 20:13:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 3f2951d102b9a317d7f62d56fe9add1b SHA-1: d90af9b128f6f1b96d21df3a534468f1d718686a SHA-256: ebe272166afab5bb2ec70d9715003e1fb36fde0a7192718f6f649f87d742d5db
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicative of a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery via these external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://hbphoto.ca/resimler/files/29247431281.pdf In PDF document text
    • https://www.taxikladis.gr/wp-content/plugins/formcraft/file-upload/server/content/files/1606e1333694f5---63433978803.pdfIn PDF document text
    • https://fobiy.net/wp-content/plugins/super-forms/uploads/php/files/fbfab2979c641b8896e68c29ba078489/sabokinuzaxapejomamezosew.pdfIn PDF document text
    • http://cuahuyhoang.com/media/ftp/file/felufigononosizex.pdfIn PDF document text
    • http://01host.ru/userfiles/files/44567873178.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/cf0b2e5773093acba90a401c91fcf492/88698973215.pdfIn PDF document text
    • http://quickfix-poland.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085163040f23---1446441775.pdfIn PDF document text
    • http://princeton1959.com/clients/863834/File/23565898959.pdfIn PDF document text
    • https://hanahana.vn/media/ftp/file/vuvabofifezogex.pdfIn PDF document text
    • http://szzxwx.com/Upload/Upload/file/202163124979204.pdfIn PDF document text
    • https://kenadong.com/contents//files/84815482836.pdfIn PDF document text
    • https://marciasmithconsulting.com/wp-content/plugins/super-forms/uploads/php/files/a633b967110668ec52ee746361e3c0c3/50946034990.pdfIn PDF document text
    • http://rosg.net/sa_upload/userfiles/file/20210730030858.pdfIn PDF document text
    • http://50wj66.com/clients/a/af/af9d65f11c1965a5434adcd4cd578f00/File/25166134249.pdfIn PDF document text
    • http://stallingreunion.com/clients/a/a3/a37dbb3dca22f8cb40f44de83fe48269/File/podamazavedusuzo.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/4a76bdde083e6afe6764bee8699cc0a0/mekuvugotobupeka.pdfIn PDF document text
    • http://mav-auto.ru/images/file/fubugosakikireg.pdfIn PDF document text
    • https://botroul.be/uploads/80192608261.pdfIn PDF document text
    • https://postelezmasivu-praha.cz/ckfinder/userfiles/files/gozurimuzubipazaxaju.pdfIn PDF document text
    • http://russia-ex.com/39376280982.pdfIn PDF document text
    • https://badoza.net/userfiles/file/jesudedaviwufu.pdfIn PDF document text
    • http://goraku-sangyo.com/userfiles/file/nalevobimatipezawuzoxomo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=new+odia+movie+song+2018PDF 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_off0000d052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD052 10980 bytes
SHA-256: 09525753d8164d64b209292716a0ed7960800aa4152ba1a77d3f0dd9b5acd76d
font_01_sfnt_off0000e9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000101ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101CA 17872 bytes
SHA-256: c277760397bee4b279bb8affb3f06c58173ecf28728c57d896d05e444839908c

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