Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca2adc18f30f82d6…

MALICIOUS

PDF

84.9 KB Created: 2021-09-08 04:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 477ddaa9155d4c82a1417428821505bc SHA-1: e8401de125963a6244d7492dcab89d00d5b6462c SHA-256: ca2adc18f30f82d6f55e6b1efedf10174d103f400d2bcef50f6d28fc17c6f7cb
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 WordPress sites and disposable domains, indicating a link farm designed to lure users to potentially malicious content. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification strongly suggests maliciousness. The presence of multiple external URIs and link farms points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://zawodydrwali.pl/app/webroot/userfiles/file/tefozexos.pdf In PDF document text
    • http://www.nationaalgolfcongres.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1608b2e8c84bfa---susaludasagozeritolikazo.pdfIn PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/e92e87b2ab928db12108aa984c3431e4/juwesotutedukadamo.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160aa88d106cfd---88740246095.pdfIn PDF document text
    • https://akdenizokullari.k12.tr/wp-content/plugins/super-forms/uploads/php/files/njqblmf82nbktj5nk76bjldbf9/gukozajunebejob.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3eb29e2cb---41651789544.pdfIn PDF document text
    • http://stagelight.pl/userfiles/files/73760372497.pdfIn PDF document text
    • http://abogarestudio.com/userfiles/file/8001537608.pdfIn PDF document text
    • https://kaemsp.org/upload/editor/file/17703016541.pdfIn PDF document text
    • https://www.weboonline.com/ckfinder/userfiles/files/fuganomigemew.pdfIn PDF document text
    • http://multifamilyfoundation.org/clients/3/38/38c33163524538bb895552046de0b362/File/rosoludiwatirenibotuwu.pdfIn PDF document text
    • http://emirates-offshore.com/uploads/image/file/96813079298.pdfIn PDF document text
    • https://cribpointonline.org/cribpointonline/userimages/file/vasujofukorapiwapukevovo.pdfIn PDF document text
    • https://www.psk.com.au/application/third_party/ckfinder/userfiles/files/kofulop.pdfIn PDF document text
    • https://wfca-czech.cz/temp/userfiles/files/balokaxutevadivunizigos.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16088dc9735442---1394023929.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160cd16c44f25c---13784669376.pdfIn PDF document text
    • http://mmdplus.com/userfiles/files/20210718_001817.pdfIn PDF document text
    • https://dijitalsanat.link/upload/files/11322991387.pdfIn PDF document text
    • https://mma-montessori.com/admin/ckfinder/userfiles/files/45891172094.pdfIn PDF document text
    • https://fiambreszav.com/wp-content/plugins/super-forms/uploads/php/files/84a217ca21281ad51997f4231e8df52d/50704433918.pdfIn PDF document text
    • https://sweetestspaparty.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c607c59027---xasimapotelatuluxamu.pdfIn PDF document text
    • http://siltherm.com/ckfinder/userfiles/files/64046100493.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=l%27oiseau+bleu+paroles+pdfPDF link annotation
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607458105f10b---45837419195.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_off0000dfac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAC 21780 bytes
SHA-256: cc24dd6e397aed80ecc1399a90f428eb9ae4d5157957ec9f10d59f409db14690
font_01_sfnt_off000115ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012e05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E05 10520 bytes
SHA-256: 17b22d368e4dac60ad3805ece7ee70290daec8a5d11031c0467dfdf9893a868f

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