Malicious PDF — malware analysis report

Static analysis result for SHA-256 361e1ecb9f7313fd…

MALICIOUS

PDF

77.6 KB Created: 2021-09-02 08:34:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 4fb0ffeee6f708ba1e4a8616f060b526 SHA-1: b6c7f13b3e7e30b2c205674a5ca5476bb964c3ac SHA-256: 361e1ecb9f7313fd311e6c2aa3a63a980262289f2043a8e58b295212862bfb5d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malicious intent. It functions as a link farm, containing numerous URLs pointing to various domains, some of which are hosted on compromised CMS platforms or disposable hosting. The primary goal appears to be SEO manipulation or redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://ivanda-commerce.hr/userfiles/file/vonajasomanevubedugow.pdf In PDF document text
    • http://mid-europe-ex.com/lifokaru.pdfIn PDF document text
    • http://gtlmarinefuel.com/userfiles/file/95165238782.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/piwexuwavimasusowaripu.pdfIn PDF document text
    • http://ruben.pl/ckfinder/userfiles/files/ranawirikawage.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609d19b9634ea---gutusiwifajafopozovakufup.pdfIn PDF document text
    • https://nobleanimalsanctuary.org/wp-content/plugins/super-forms/uploads/php/files/tmp/gadiposamibevimapawe.pdfIn PDF document text
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/158f18cc33980e40d997bbb4e7b448f8/35349336162.pdfIn PDF document text
    • http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610be0189c9fa---lazukariguras.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/bafavalevig.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094dd5bd13d4---vujiloxerenolar.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b5c9125ea6f---21165630189.pdfIn PDF document text
    • http://mateuszkucharski.pl/admin/file/fuluruxenilidije.pdfIn PDF document text
    • http://artospace.com/pics/file/5368794062.pdfIn PDF document text
    • http://lebo1977.com/clients/7/7f/7f96701a3ad848a090446b6ea7dc17b1/File/dibodonab.pdfIn PDF document text
    • http://stonebreaker.at/26839250082.pdfIn PDF document text
    • https://qualityroofinnandsuites.com/nbloom/fckuploads/file/jijujelidavokesumived.pdfIn PDF document text
    • http://www.hussco-steel.com/husscofiles/files/kikepaweresiwotuguxejisam.pdfIn PDF document text
    • http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/e684f6e460f78f4e3f13f4ecd8095d2c/66915572465.pdfIn PDF document text
    • http://www.firengo.com/userfiles/files/kefatewunulimasazoni.pdfIn PDF document text
    • http://adria-ex.com/images/blog//file/gakuxusa.pdfIn PDF document text
    • http://mstreatmentadvances.com/userfiles/files/jijegabiluma.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=ascend+on+soybeansPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EA 10264 bytes
SHA-256: 03c5d77961ab437526781159f960acf46f44df5fd4bdd93498a45ce171cb5161
font_01_sfnt_off0000e12f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE12F 18104 bytes
SHA-256: 219050cb88d4be9025a9cb00c64600fc49fdb254c5a919bf4a08924480c16c40
font_02_sfnt_off00010ff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10FF8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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