Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3d7d974b11a4f11…

MALICIOUS

PDF

75.8 KB Created: 2021-09-04 13:05:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 7260a5cf3e6150bd39b72cc3a2469a78 SHA-1: 363e846fd09fe652a59e529871e3dacf655fceb1 SHA-256: a3d7d974b11a4f1141d99176e595a971935eef2b10ced40a0440a53375b5a12f
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high probability of malicious intent. The heuristics reveal it functions as a link farm, containing numerous URLs pointing to external sites, some of which are hosted on compromised or disposable domains. This pattern is commonly used to redirect users to phishing pages or download further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://urbanlivin.lu/userfiles/files/36312250304.pdf In PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2b3ce134cd---70211043203.pdfIn PDF document text
    • http://bestforfishing.com/wp-content/plugins/super-forms/uploads/php/files/104c343312e91d64da2e6303d8e32639/76825272359.pdfIn PDF document text
    • http://sanmarinreunion.com/clients/c/c0/c0747301521b2fcd71a0106c9132c7e7/File/92905997977.pdfIn PDF document text
    • http://abpjse.news-read.com/upload/files/6017511655.pdfIn PDF document text
    • https://j26clean.com/upload/files/83152451351.pdfIn PDF document text
    • http://timnhanhonline.com/upload/files/xedetexipudezatatona.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/6eaac771d37f248556620ed28f4f34ec/64232683367.pdfIn PDF document text
    • http://inkjetartandimage.com/Uploads/file/butimumefolade.pdfIn PDF document text
    • https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/34df38f91a1117610c2c3c51bae469b4/jukufegaduvaguli.pdfIn PDF document text
    • http://isemya.by/modules/ariol/static/ariol/ckfinder/files/18521264016.pdfIn PDF document text
    • http://baohanhranghm.com/upload/img/files/87599515393.pdfIn PDF document text
    • http://chamdure.com/DATA/files/rozododanuxosawewagarubis.pdfIn PDF document text
    • http://ventima.ru/userfiles/file/97463489385.pdfIn PDF document text
    • https://levin-dent.ru/wp-content/plugins/super-forms/uploads/php/files/94a97e52f7cc26f729f9fbb6f5179c57/fikisotilominerewemopaxij.pdfIn PDF document text
    • https://www.dartmusicfestival.co.uk/wp-content/plugins/super-forms/uploads/php/files/43e5934aa69beb3cd5009fd073bd405e/57156412530.pdfIn PDF document text
    • https://alrashed-alsaleh.com/userfiles/files/1965843508.pdfIn PDF document text
    • http://easyreturn.store/userfiles/file/48472449403.pdfIn PDF document text
    • http://pho32shabu.com/uploads/files/mupaketizisa.pdfIn PDF document text
    • https://gift-edu.ru/wp-content/plugins/super-forms/uploads/php/files/df20f878d8b68123f9f4724a99ecbfd6/51509789655.pdfIn PDF document text
    • http://phuwangnam.com/user_file/file/69175723078.pdfIn PDF document text
    • https://njsolarpower.com/wp-content/plugins/super-forms/uploads/php/files/0b2502895eade0cc9d7cb77078ba3256/87154331669.pdfIn PDF document text
    • https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/5f6c1865cb26a90a400c803d5033be47/kofam.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=shared+parental+leave+form+pdfPDF 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_off0000c3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3AD 10644 bytes
SHA-256: ed8666c8acf277724cf7f39d79701afc192f86a288097a14024544d818f47c5a
font_01_sfnt_off0000dbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f3f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F5 18232 bytes
SHA-256: 39164678cbf47aac09fdcb2ea926134357dcc69d06aed58f745fcf7a34dfa3fa

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