Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eea461296b17fef…

MALICIOUS

PDF

71.5 KB Created: 2021-09-12 07:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 0ba6a1baa9d0716159bf96d19428e4cd SHA-1: 755a38cee35eee9ccb20525f75aef9a2e217abce SHA-256: 0eea461296b17fefaf84dab11cddb65885500fe8deb4ab4d5afa0e081c44d0cc
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to compromised CMS uploads and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to phishing or malware distribution sites. The presence of a link farm and the nature of the URLs suggest a phishing or credential harvesting campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9916

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.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132ce1200dac---jazuleta.pdf In PDF document text
    • https://barcelonamedicalcenter.com/files/galeria/files/26532078237.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/9331403886.pdfIn PDF document text
    • https://srilangkapools.com/contents/files/60975719800.pdfIn PDF document text
    • http://www.ruben.pl/ckfinder/userfiles/files/tuposinezexikotepuxif.pdfIn PDF document text
    • http://hkwwta.org/userfiles/potizifubijilo.pdfIn PDF document text
    • http://charontrade.hu/data/file/24425659702.pdfIn PDF document text
    • http://barcelonasixtytwo.com/userfiles/file/dozalefuvobevojaxan.pdfIn PDF document text
    • http://bdn10.cz/files/file/wezatawatunile.pdfIn PDF document text
    • https://bauarch.bg/files/64783914566.pdfIn PDF document text
    • http://chuabenhxuongkhop24h.com/images/files/99559556734.pdfIn PDF document text
    • https://dcmheavyequipment.com/admin/images/file/varoxal.pdfIn PDF document text
    • https://himalayanwanderer.com/himalayan/userfiles/files/kodujowowevelavisux.pdfIn PDF document text
    • http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1613237ee4e074---44553950150.pdfIn PDF document text
    • http://rioairporttransfer.com/ckfinder/userfiles/files/50262797949.pdfIn PDF document text
    • https://mygenius.ru/admin/ckfinder/userfiles/files/33920160080.pdfIn PDF document text
    • https://chineseclothingonline.com/File/60187684143.pdfIn PDF document text
    • http://uforoi.com/app/webroot/uploads/files/luruxuxozukowatigufo.pdfIn PDF document text
    • http://scbczy.cn/up_files/file/20210907_152248.pdfIn PDF document text
    • http://vanprodukt.cz/UserFiles/File/tawugesopoku.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c2eea0de85---47229872301.pdfIn PDF document text
    • https://tenshinorchids.com/FCKeditor_upload/file/tafof.pdfIn PDF document text
    • https://novahealthclinic.ca/userfiles/file/77667132624.pdfIn PDF document text
    • https://10kshot.com/customerinterview/ckfinder/userfiles/files/sasovuxejuvirewebutibifev.pdfIn PDF document text
    • http://hengtongrongshang.com/jingkelun/userfiles/files/20210903200154.pdfIn PDF document text
    • http://dolphinegypt.net/userfiles/file/fetiguripewakegakesi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=c+ops+apk+downloadPDF 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_off0000bbdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBDD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d3f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F4 10172 bytes
SHA-256: 819d114a1563112b0767f6a74e5cafa0526740b997d62756ce6babd06f8191cc
font_02_sfnt_off0000eae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE4 14904 bytes
SHA-256: 1e008abf8cee8647f130c0e3b20d640a0665e4c4fc7fefc11c62fd104271fba4

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