Malicious PDF — malware analysis report

Static analysis result for SHA-256 3417386bce778e1a…

MALICIOUS

PDF

99.5 KB Created: 2021-08-29 04:09:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7ab0d771ceba879bf235fd7f32372a8a SHA-1: 51d7ca1c41c965f7b52d3c000730c2296dcbd595 SHA-256: 3417386bce778e1a47d6cc71f8be757be326f16b7c73caf8c8160691a3527d05
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various websites, including some hosted on compromised WordPress installations. The presence of these links suggests an attempt to lure users to malicious or compromised sites, likely for phishing or further malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://dimensioninteractive.com/WYSIWYGImage/file/9845436901.pdf In PDF document text
    • https://textolinguisticsolutions.com/upload/editor/file/82102492913.pdfIn PDF document text
    • http://maurovalleferroarchitetto.eu/userfiles/files/lebeb.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160900e218d018---58282882128.pdfIn PDF document text
    • http://belst.by/upload/file/najiwasodufowujuw.pdfIn PDF document text
    • http://aotwresort.info/ckfinder/userfiles/files/kotukozozut.pdfIn PDF document text
    • http://www.gunyagder.org.tr/wp-content/plugins/super-forms/uploads/php/files/o9olfoi3i84dn77cu7ugd2utf3/sapezi.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/xezetibe.pdfIn PDF document text
    • http://fijiembajak.com/uploads/ck_uploads/files/22852995163.pdfIn PDF document text
    • http://domoticasociale.it/immaginiNewsletter/file/78120411420.pdfIn PDF document text
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/c5319000c6cf13570607101e2c35f358/nebeguwudukoragi.pdfIn PDF document text
    • http://peaceinsrilanka.lk/userfiles/file/dafugodevitotolipu.pdfIn PDF document text
    • http://locthanhwindow.com/img_duhoc/files/76798741722.pdfIn PDF document text
    • https://energooptima.hu/upload/File/rukulakeloke.pdfIn PDF document text
    • https://www.drserapkagan.com/wp-content/plugins/super-forms/uploads/php/files/ja49vvo2hks9lk8sgs2c3n7hjh/kolana.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/1e46780544780d30c75c893179b45852/62115397232.pdfIn PDF document text
    • http://posicert.com/upload_fck/file/2021-8-3/20210803010027305519.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/pcb0pgbpok6m809mkimjdubcdj/pitapobofuroletub.pdfIn PDF document text
    • http://constructionone.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b35d0ade06a---mubafoz.pdfIn PDF document text
    • https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/c8e74b33dc0dc78756cfceac14c115d4/ninejo.pdfIn PDF document text
    • http://for-rent-aalst.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607828b56e7cb---patunilaxawajef.pdfIn PDF document text
    • https://plagij.at/ckfinder/userfiles/files/vebuvinujupitisuf.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=somewhere+only+knowPDF 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_off00011787.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11787 21264 bytes
SHA-256: 64b1ff07b6c49c7499b901b20b2f80402d4145a6f87a48ad6dee9f5f4346410b
font_01_sfnt_off00014f98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14F98 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off000167af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x167AF 10220 bytes
SHA-256: 0a75f590c3243101dd661bc1bf04bdfcebb2c292741fbeb8a15f818955ab80c7

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