Malicious PDF — malware analysis report

Static analysis result for SHA-256 96e6d3ad75fbc671…

MALICIOUS

PDF

71.0 KB Created: 2021-09-29 03:03:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 3d14ab5961c4e2fdfe4497c91a15fd7f SHA-1: 6050d18b9dac73d032065ea87ccf96b8286169cd SHA-256: 96e6d3ad75fbc67124ad215a0f7a0febe3b13cd88263b9deb31ec5926404e77b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains a large number of embedded URLs, many pointing to disposable hosting, suggesting it functions as a link farm. The presence of 'utm_term=win+7+loader' in one URL hints at a potential lure for outdated software, possibly leading to phishing or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://lepetitjaunais.com/userfiles/file/zaxujawibejamoxov.pdf In PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-9-20/20210920101648712753.pdfIn PDF document text
    • https://hondaotohaiphong.vn/upload/files/12098532629.pdfIn PDF document text
    • https://wemservice.com/ckfinder/userfiles/files/37664709213.pdfIn PDF document text
    • https://almudenafernandez.co/ckfinder/userfiles/Files/genomexapo.pdfIn PDF document text
    • http://malabarisproducoes.com/arquivos/files/tenexobilugaligulolux.pdfIn PDF document text
    • http://www.naturhalles.fr/fckeditor/userfiles/file/31871507865.pdfIn PDF document text
    • https://onutglen.com/caningest/images/file/siwetajavanalelet.pdfIn PDF document text
    • https://linhngapt.vn/upload/files/38825918219.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/8ff304b6a749eadfe2cac39afc20c422/solixesu.pdfIn PDF document text
    • https://anjingliar.com/contents/files/nifurofekajefosiraxunano.pdfIn PDF document text
    • http://www.ondebiz.com/userfiles/file/55003272678.pdfIn PDF document text
    • http://ellenia3.eu/userfiles/files/nezuposawoxexuwoso.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/63711687714.pdfIn PDF document text
    • https://rwd1.thadv.com/upload/files/jokejafawifar.pdfIn PDF document text
    • http://iweldbot.com/ckfinder/pho/files/vojaw.pdfIn PDF document text
    • http://taiwan-tsai.com/upload/files/nosanoru.pdfIn PDF document text
    • https://ccskin.com/geektic/files/nuluzugemarawa.pdfIn PDF document text
    • https://mkycc4.com/kycc4.com/userfiles/files/45501567049.pdfIn PDF document text
    • http://snieznik.pl/userfiles/file/32004344232.pdfIn PDF document text
    • http://msslink.ru/userfiles/files/nezofofejoruk.pdfIn PDF document text
    • https://bharatceramics.in/ckfinder/userfiles/files/kijebupenabaluwi.pdfIn PDF document text
    • http://www.offshoreyachts.net/web_upload/editor/files/82482514281.pdfIn PDF document text
    • http://haithuanphat.com/uploads/files/pilodumam.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=win+7+loaderPDF 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_off0000b2ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2EF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000cb01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB01 17528 bytes
SHA-256: 155ea37eea14268c66985c56e3d95d1a0a2d1614c0f1753cb8a43fc095c633dc
font_02_sfnt_off0000f841.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF841 10020 bytes
SHA-256: 0fc04061e35f944b0e479995365895ce3476e6b140b077f3b33297983c1e6e2e

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