Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d52e720583926e…

MALICIOUS

PDF

98.4 KB Created: 2021-09-18 18:48:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0a339dda4485e7bf87356abe319f23bd SHA-1: fc3f645df05cc94fec02b38526ddc2a17ca5c031 SHA-256: e0d52e720583926edfb691dd28c8fa2b58ea04847d5c8eca9eb1a34f64fe4a64
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The PDF contains numerous links to external websites, many hosted on compromised CMS uploads or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the PDF structure and embedded URLs are indicative of a malicious lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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 http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1613a6b6b84123---zupukila.pdf In PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/161309465ddaaa---pubotelotazi.pdfIn PDF document text
    • http://splhardware.com/UploadFile/file/2021091617221473499.pdfIn PDF document text
    • http://spzpoz-zdunskawola.pl/upload/file/voravas.pdfIn PDF document text
    • http://macabrey-luthier.fr/data/Files/webetikepogit.pdfIn PDF document text
    • https://extremedriveline.com/ckfinder/userfiles/files/jefaroloxadugu.pdfIn PDF document text
    • http://pass38.com/images/contentimages/files/28290896480.pdfIn PDF document text
    • http://showplus.ae/userfiles/files/58221122419.pdfIn PDF document text
    • http://laser-piskovani.cz/democms/userfiles/file/nezimuwikikipav.pdfIn PDF document text
    • https://infotechsystemsonline.com/ital/www/img/file/pibetabikamuj.pdfIn PDF document text
    • https://techson-cctv.com/upload/file/90856567628.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/12868696828.pdfIn PDF document text
    • http://ecole-belair.com/ecole/file/51938467472.pdfIn PDF document text
    • https://www.znackakvality.info/files/bunoziwazuja.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16140d98d975f3---jureru.pdfIn PDF document text
    • http://registermycompany.in/admin/userfiles/file/sodapanewumiloterabab.pdfIn PDF document text
    • https://acconpriti.com/ckfinder/userfiles/files/gedaguzegixoxidafofagi.pdfIn PDF document text
    • http://www.aceitunasdelguadalhorce.es/ckfinder/userfiles/files/60788225532.pdfIn PDF document text
    • http://refah4ter.info/basefile/hotelrefah4terir/files/nutavunoxor.pdfIn PDF document text
    • http://imobilestore.de/userfiles/file/kupas.pdfIn PDF document text
    • http://nicolalazzarotto.com/userfiles/files/wasasupi.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/gghle3891pcb5is1iiqovmg722/kumona.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=space+on+my+phonePDF link annotation
    • http://e1pl2.nazwa.pl/busy/fotki/file/28167356775.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_off00011fbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FBE 17676 bytes
SHA-256: a11d6bdd18e8f774c60cdcd8481543a144846b7cfd82fb28e56e88aaf313db6c
font_01_sfnt_off00014d12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14D12 10324 bytes
SHA-256: b53a27253edc9d788b07191678e584cc6b5a3e5050675962b63b6147b05464cb
font_02_sfnt_off0001642f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1642F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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