Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee19dfc750209c2e…

MALICIOUS

PDF

102.6 KB Created: 2021-09-14 09:16:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 23db3ee27f8f96eb4057bf700338a1e9 SHA-1: 26c881fb8dd0f50a9ec488ffa09f4e17ea36403e SHA-256: ee19dfc750209c2ea066c1fab21a245b2730ac0fc734b2c5ef2a91480139563f
156 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to various domains, many of which appear to be compromised or disposable hosting. Heuristics indicate this is a link farm designed to direct users to external content, consistent with phishing or malware distribution tactics. The ML classifier and ClamAV detection strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

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://pixomot.ru/uplcv?utm_term=list+of+dbz+androids PDF link annotation
    • http://cbestdesign.com/ckfinder/images_store/files/12312708225.pdfIn PDF document text
    • http://hodoan.net/userfiles/file/25221699763.pdfIn PDF document text
    • https://ganganagardentist.com/userfiles/file/revifonowe.pdfIn PDF document text
    • http://vevo.keresztessyoptika.hu/elemek/file/96843309454.pdfIn PDF document text
    • http://massintech.ru/img/outer/files/79091426789.pdfIn PDF document text
    • http://www.neoneophytou.com/ckfinder/userfiles/files/47814512124.pdfIn PDF document text
    • https://computerzone.pk/file/sinuve.pdfIn PDF document text
    • https://mimpishio2bet.net/contents/files/32507867482.pdfIn PDF document text
    • http://winhazel.com/indigo/ckfinder/userfiles/files/88043188543.pdfIn PDF document text
    • https://jss-moms.si/upload/File/98917394378.pdfIn PDF document text
    • https://cargobull.cz/res/file/19779367892.pdfIn PDF document text
    • http://moscreen.in/cmsfiles/file/8404184816.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/84ada3ba65b82ef045e1ebd5ab57b30a/64026080240.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137935509eba---ridufa.pdfIn PDF document text
    • https://boyanbolyarski.com/userfiles/file/62602999513.pdfIn PDF document text
    • http://villaturri.it/wp-content/plugins/formcraft/file-upload/server/content/files/16133fd2d0a0f0---jojepazabizitobewij.pdfIn PDF document text
    • http://longruiglass.com/ckfinder/userfiles/files/20210909_040955.pdfIn PDF document text
    • http://www.yevres.fr/ckfinder/userfiles/files/bisimarudo.pdfIn PDF document text
    • https://izyskately.ru/foto/ck/files/75868444659.pdfIn PDF document text
    • http://admio.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613424fd46845---lexazamug.pdfIn PDF document text
    • https://xn--p3t29jo1ed4o4xw.tw/upload/files/59849318403.pdfIn PDF document text
    • http://trips-in.com/ckupload/files/lalisunuxobamo.pdfIn PDF document text
    • http://decaldankinh.net/upload/files/bigalulokem.pdfIn PDF document text
    • http://epoptavky.com/is/images/FCKeditor/File/nolekigu.pdfIn PDF document text
    • https://ecableapp.com/FCKeditor/FCKimgUpload/file/50358880725.pdfIn PDF document text
    • https://marljivo.hr/UserFiles/files/40079466961.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_off00012b1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B1C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001432e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1432E 19452 bytes
SHA-256: 58e31e58601d5168561217a537561bcd5b517e2df06e5f90703e04621aa000a4
font_02_sfnt_off00017639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17639 10328 bytes
SHA-256: 244467bc0f7ca3eb731593a38bd59ce75e8a1629b365f4c17960eb59964b9a4a

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