Malicious PDF — malware analysis report

Static analysis result for SHA-256 2952200f44c8face…

MALICIOUS

PDF

77.6 KB Created: 2021-08-15 00:22:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: 48fbf5126dbffd63a5f984b0c9272662 SHA-1: 1054808280ee171744a26ea9fece59b1651f9a07 SHA-256: 2952200f44c8face86655d05555675363f5efc40bf2ae975486c10234aaad3e3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links pointing to various domains, many of which are hosted on compromised WordPress sites or disposable hosting. The presence of a 'utm_term=convert2mp3+download+full' parameter in one URL suggests a lure related to downloading software or files. ClamAV detection and ML classification strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7561

Heuristics 5

  • 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
  • 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=convert2mp3+download+full PDF link annotation
    • https://myupfield.link/wp-content/plugins/super-forms/uploads/php/files/kcc6k3v2ke9je7a9n48umi99br/maxenu.pdfIn PDF document text
    • http://www.mostenpo.jp/userfiles/files/keravuritujufatuda.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abf52d3b41e---jepuxapudiwatodi.pdfIn PDF document text
    • http://klpa.net/userData/board/file/74203374755.pdfIn PDF document text
    • http://baiduvpn.com/upload/files/sasipikesinanilutirubu.pdfIn PDF document text
    • https://bczenekar.hu/files/file/gexorubu.pdfIn PDF document text
    • https://www.psalighting.com/wp-content/plugins/super-forms/uploads/php/files/c0bbdb922be3f3643f2320e34bf39f11/19898263973.pdfIn PDF document text
    • https://phucatgarment.com.vn/ckfinder/userfiles/files/ronavimuboxu.pdfIn PDF document text
    • https://nmg.lv/img/uploads/files/suzosonaketutuwewodikagin.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/rl5t3bhfdm9git2rbqj9bbsd2m/kemanixumulenajuzuweterus.pdfIn PDF document text
    • https://matrainagycsalados.hu/userfiles/file/14619210333.pdfIn PDF document text
    • http://podiummoda.ru/userfiles/file/99340524830.pdfIn PDF document text
    • https://www.web2business.pt/wp-content/plugins/formcraft/file-upload/server/content/files/16091b9743c4fa---gatozewu.pdfIn PDF document text
    • http://wildpflanzen-planung.de/file/74668930059.pdfIn PDF document text
    • http://cmuniontravel.com/userfiles/file/paxisugurur.pdfIn PDF document text
    • https://www.lightingsolutionsinc.net/wp-content/plugins/super-forms/uploads/php/files/7bc65d2c3e70e2e42f8c5a0caae0f58f/69093157622.pdfIn PDF document text
    • https://law.myvzl.com/wp-content/plugins/super-forms/uploads/php/files/2e4j2hqlqs7jabo07kba2tqocs/nivinakijurewesug.pdfIn PDF document text
    • https://bawaniint.com/ckfinder/userfiles/files/fobasejewavowinetitizabog.pdfIn PDF document text
    • https://theemperorsoldclothes.co.uk/wp-content/plugins/super-forms/uploads/php/files/ra7a90ofi9j5hc806cqnt96944/bizavem.pdfIn PDF document text
    • https://lawina-radom.pl/files/file/tijid.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1607001a337150---wovapagodar.pdfIn PDF document text
    • http://www.minaakshimajumdar.com/fckimages/file/kapevuxad.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160f1a6598e5fa---20396004643.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfc1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFC1 17384 bytes
SHA-256: a19de99dd521e279ea61a16c708360927bb71a478e7eaa72bd87c1b46290a5df
font_01_sfnt_off00010c86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C86 10972 bytes
SHA-256: aa123d1115b91ef2541bf79a82c13ca4a013507407bc8dbd3f0f3b7376781f30