Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c6291ea73ac27c…

MALICIOUS

PDF

79.9 KB Created: 2021-09-20 18:25:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: f25a1722cbbeed7aea3cd3c495c40053 SHA-1: fd4edecaa487bd51f77028ea753b6aeca3d07773 SHA-256: e9c6291ea73ac27c711ea6488207e1aa95de95cac8f1ac1850acb211eb326101
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous external links, many hosted on compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://smidgel.ru/uplcv?utm_term=xmeye+pro+apk PDF link annotation
    • https://plagij.at/ckfinder/userfiles/files/51780457717.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/86d3fd3ac135907e7a093ce35bbd9ba9/13838258888.pdfIn PDF document text
    • http://bagandpack.ru/wp-content/plugins/super-forms/uploads/php/files/f7656f0f0b94ebf1009f0f75d1f46c8b/tatijemitogamekutudoti.pdfIn PDF document text
    • http://gruppocreta.com/userfiles/files/28357672751.pdfIn PDF document text
    • http://serdceprirody.ru/userfiles/file/70017680510.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/nuc8a763v1org0vvv0kvh26raa/xukexez.pdfIn PDF document text
    • https://dalycity.com/wysiwygfiles/file/89332297066.pdfIn PDF document text
    • https://relleno-acidohialuronico.com/wp-content/plugins/super-forms/uploads/php/files/8d50ee4e5ae5743056b5ef47ff6b8ece/vokokaxegera.pdfIn PDF document text
    • http://xn--365-pn7mwb654m2qn.com/ckupload/files/76960517084.pdfIn PDF document text
    • https://www.azulejositurry.com/wp-content/plugins/super-forms/uploads/php/files/i56hqe8mdaj7vh7rel6ajg0936/47873979629.pdfIn PDF document text
    • http://savalis.ru/userfiles/file/rabezumufuwixivawu.pdfIn PDF document text
    • http://pho32shabu.com/uploads/files/68385012225.pdfIn PDF document text
    • http://thehedgerowchronicles.com/ckfinder/userfiles/files/navoveluvi.pdfIn PDF document text
    • http://quesnelfoundation.ca/userfiles/file/tuzujalavodozunogowitewer.pdfIn PDF document text
    • http://tarnava.eu/user_images/file/40330963264.pdfIn PDF document text
    • https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/16130e36df00f7---jitakesopuzem.pdfIn PDF document text
    • https://lmbri.com/WYSIWYGImage/file/juvavireworisatigi.pdfIn PDF document text
    • http://tubemakingmachine.com/uploadfile/files/vukunapudalutunemu.pdfIn PDF document text
    • https://hsdinstruments.nl/uploads/files/ratumujataw.pdfIn PDF document text
    • https://floridahouselottery.com/test/userfiles/file/jikaginifexizazasaw.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/riduzelusuleferuxiludepax.pdfIn PDF document text
    • http://gallery4walls.com/upload/editer/file/95839475149.pdfIn PDF document text
    • http://navigator-nsk.ru/userfiles/file/24876264729.pdfIn PDF document text
    • http://yeongwonenc.com/userfiles/file/49678578677.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_off0000d74b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD74B 10116 bytes
SHA-256: 03b251c00c004729617e874eafac600d8cb42a36a257217594a70c57a310df3f
font_01_sfnt_off0000edd7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDD7 17020 bytes
SHA-256: 5771ff7132758be29a28fc3026e04d2a50853ace3ba7d9bfb90112d159f40cfb
font_02_sfnt_off000119e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119E9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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