Malicious PDF — malware analysis report

Static analysis result for SHA-256 e277ca377547c8e0…

MALICIOUS

PDF

112.6 KB Created: 2021-09-01 07:31:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: db07569c32a36567f065373c475095e2 SHA-1: d3290851ccdf5b4a943464bdb70297cc68e1db2c SHA-256: e277ca377547c8e0e5ac69242d77ce9bae0f1c97403faad27a5250caa12ae45c
156 Risk Score

Malware Insights

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

The PDF file contains numerous links pointing to other PDF files hosted on compromised websites, indicating a link farm designed to distribute malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, and the document body was unreadable binary data.

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://huntic.ru/uplcv?utm_term=how+to+sign+parents+in+asl PDF link annotation
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16124dfa74fa66---dabawotimonati.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/161141b4abd1d8---porudowojuwupanetiw.pdfIn PDF document text
    • http://www.julietlandau.com/fckeditor/userfiles/file/videkogani.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e83a8c28d3---7384451771.pdfIn PDF document text
    • http://ruihuitax.com/files/file/rowisi.pdfIn PDF document text
    • http://denki-shonan.com/uploadsfile/79004594218.pdfIn PDF document text
    • https://bimetoor.com/basefile/bimetoorir/files/83160173233.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/khivg811e5fv7celap8hcrcu1l/lizewafotazesolodif.pdfIn PDF document text
    • http://cnhhgj.com/upfiles/userfiles/file/76371513211.pdfIn PDF document text
    • https://aokman-drive.com/d/files/nafijinareza.pdfIn PDF document text
    • https://campermagazine.tv/public/file/71911272662.pdfIn PDF document text
    • http://ajisushionline.com/uploads/files/14853905419.pdfIn PDF document text
    • http://diagonal.org.ar/wp-content/plugins/formcraft/file-upload/server/content/files/160a40f3b3f43a---zafavatowexixu.pdfIn PDF document text
    • http://www.buildingmalawi.com/images/uploaded/documents/leniwugavuposafagukulef.pdfIn PDF document text
    • http://www.putnamtaxi.net/wp-content/plugins/formcraft/file-upload/server/content/files/16084dffce6743---26988284726.pdfIn PDF document text
    • https://webtechnocrats.com/upload/file/10108938395.pdfIn PDF document text
    • https://livre-d-art.com/ckfinder/userfiles/files/mebesatukejoniredagazixi.pdfIn PDF document text
    • https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612a18a605895---wuzulagowizemaxav.pdfIn PDF document text
    • https://securityguardsupply.net/php/uploads/file/76207071169.pdfIn PDF document text
    • http://wisdomtours.net/upload/file/85055113496.pdfIn PDF document text
    • https://rmissio.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1607001a8a4249---26963463522.pdfIn PDF document text
    • https://netiko.fr/img/Data/file/73732436434.pdfIn PDF document text
    • http://spoanalyze.com/wp-content/plugins/super-forms/uploads/php/files/28f1b232fe2dc06fca818f40c0d7ab64/lenipewemokuruvego.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_off000153c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153C2 18720 bytes
SHA-256: b5cda13fd1d3c48a1278e6950cc172d53dd63f7b450bcbd4087435f3c7d45d28
font_01_sfnt_off00018449.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18449 10504 bytes
SHA-256: 825bd71472e99431e2c6bcc3b628a833e3e4ee58459e31dc696513eaee587b8a
font_02_sfnt_off00019c56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19C56 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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