Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff29252a86916034…

MALICIOUS

PDF

86.5 KB Created: 2021-09-11 19:09:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: f401f06f2ac6e65886ea00dd7b0a55d2 SHA-1: f8dbf7e4dfae4b9b1af53ac0f3a8c0f6a8d2265a SHA-256: ff29252a869160341f96b761d67b4ef4a80ac2eff420c599ef95c1f7bdceaa48
204 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains an embedded JavaScript stream and numerous external URIs, many of which point to compromised or disposable hosting. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a link farm intended for SEO poisoning or directing users to malicious content. The presence of embedded JavaScript indicates potential for further malicious actions, such as exploiting browser vulnerabilities or downloading additional payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9905

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. 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://oniceh.ru/uplcv?utm_term=what+are+junk+files+on+android PDF link annotation
    • http://panel2conso.com/userfiles/file/78274514766.pdfIn PDF document text
    • http://snuhonors.com/userfiles/file/70095859458.pdfIn PDF document text
    • http://karmakonnect.org/DrumiBhatt/karmakonnect.org/Final/ckeditorimage/files/fusurexi.pdfIn PDF document text
    • https://polaria.cz/images/file/gimin.pdfIn PDF document text
    • http://xn--80aaaaadfwa5aftjhxrkcrg8iwc.xn--p1ai/pict/file/50259490241.pdfIn PDF document text
    • http://diamantina-joaillerie.com/ckfinder/userfiles/files/7179363164.pdfIn PDF document text
    • http://xn-----6kcaheblih5ab0a6afqbzoqe.xn--p1ai/ckfinder/userfiles/files/loveromadakazed.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/pivizagawigejuk.pdfIn PDF document text
    • http://www.msjcongregation.org/www/js/ckfinder/userfiles/files/kijaveke.pdfIn PDF document text
    • http://sgd42.ru/userfiles/file/surazisidux.pdfIn PDF document text
    • https://joinvita.com/neu/userfiles/file/80918489492.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136af0b0115d---97193897011.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fe18b8b210---24644421502.pdfIn PDF document text
    • http://eva.am/files/ccd17478dfe64d29.pdfIn PDF document text
    • https://stpatswatertown.org/ckfinder/userfiles/files/80170117068.pdfIn PDF document text
    • http://flyingkirin.com/uploadfiles/file/07171314367.pdfIn PDF document text
    • http://cleanyachts.it/writable/public/userfiles/file/dopamodabubiwubere.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2021090602120373499.pdfIn PDF document text
    • https://olterus.info/contents/files/47886945350.pdfIn PDF document text
    • http://agro-partner.com/Image/files/kosonefebuxinimojedinale.pdfIn PDF document text
    • https://luxesystem.site/js/ckfinder/userfiles/files/piwoxu.pdfIn PDF document text
    • http://fractinvest.com/uploads/file/tarubimenod.pdfIn PDF document text
    • https://tapuionoticias.com/ckfinder/files/44294188225.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613571e299fcd---16651111714.pdfIn PDF document text
    • https://jnvhardoi.org/ckfinder/userfiles/files/lemikenalukixon.pdfIn PDF document text
    • http://pointerboards.com/uploads/admin/files/44331573309.pdfIn PDF document text
    • http://zs.tom.ru/jsplugins/ckfinder/userfiles/files/nexunepezusolevix.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_off0000ed30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED30 10768 bytes
SHA-256: ec8d231b674193096fa500d9deedd30ed644e4a5efec32501b65706c8f061556
font_01_sfnt_off000105e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105E4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011df6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DF6 17676 bytes
SHA-256: c4c6eab6f3b1bb30b802853778ed7bcb9b762fdb8e2999ce8a373028bc378045

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