Malicious PDF — malware analysis report

Static analysis result for SHA-256 bedd9f665937ad88…

MALICIOUS

PDF

76.1 KB Created: 2021-09-10 22:36:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-31
MD5: 57bff7866c87851e19965e0d33e1f52c SHA-1: 482a531a61107969063447460225fa47edfc1177 SHA-256: bedd9f665937ad88d58d9f2881bd48fa2e2129b6424507646b62376b6f6157a6
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF contains embedded JavaScript and numerous URLs pointing to compromised websites and disposable hosting, indicative of a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely for phishing or malware distribution. The presence of JavaScript suggests an attempt to execute code or further redirect the user.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

Heuristics 7

  • 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.
  • JavaScript action low PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://allytemp.ru/uplcv?utm_term=gta+san+andreas+infinite+health+cheat+code PDF link annotation
    • http://gyogytornasziget.hu/uploads/files/zedur.pdfIn PDF document text
    • http://offerseir.com/basefile/offerseircom/files/38676372531.pdfIn PDF document text
    • https://nuttydog.hu/ckfinder/userfiles/files/21848031000.pdfIn PDF document text
    • https://indiachristian.org/uploads/files/29991580565.pdfIn PDF document text
    • http://vhshf.de/File/mesikatosuf.pdfIn PDF document text
    • https://mavachhaiphong.com/upload/files/89237939442.pdfIn PDF document text
    • http://suportti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613262aa55297---52641774660.pdfIn PDF document text
    • https://cemb.ca/upload/editor/file/91708827361.pdfIn PDF document text
    • http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/xisugilekavorerevowaju.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16133df937f85a---22436705413.pdfIn PDF document text
    • http://bociany.sk/media/file/25683151790.pdfIn PDF document text
    • https://bda.ch/ckfinder/userfiles/files/jepebisemulav.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/00a16594e0a21f7b98dee71509a1a9e8/33551533558.pdfIn PDF document text
    • https://skatrip.com/basefile/skatripcom/files/60462693600.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134cba4d53e9---polurosezurisevejupuvaza.pdfIn PDF document text
    • http://shanghaiqingchen.com/upload/files/bozisaxunisejunebofubi.pdfIn PDF document text
    • http://onlineticketreview.com/images/file/zipenusefexape.pdfIn PDF document text
    • http://nhactheducthammy.com/upload/files/gagelifaxuwibalojegi.pdfIn PDF document text
    • http://constantcontinuity.com/membership/data/files/fepenepatabifaxalud.pdfIn PDF document text
    • http://ddservice-bmw.pl/userfiles/file/10501396746.pdfIn PDF document text
    • http://kavernoklub.com/campannas/file/tozireluwaduxuguxiwupuka.pdfIn PDF document text
    • https://sheenabusesandcoaches.com/userfiles/file/38920114842.pdfIn PDF document text
    • http://kuresi-kaitori.com/upload/content_pic/files/vopokasiliwetewupol.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_off0000c4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4FB 17648 bytes
SHA-256: 6f3f1f9181369aba0495d991717ffa0c7c6379e932b32fa0eba33fe57a386838
font_01_sfnt_off0000f2a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2A1 10612 bytes
SHA-256: ec6eb9275fda092e02cf5b66f5408a0fe72ebfc7359a4c65b7e864661f9a0e49
font_02_sfnt_off00010ad9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AD9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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