Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee02c0466c769847…

MALICIOUS

PDF

77.1 KB Created: 2021-09-05 05:18:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: e5b3dc6ea5c6284687de11df797097be SHA-1: 21daffce2a42d760c1821518bc9ded170692b4ec SHA-256: ee02c0466c76984794251547b7aa5e307a852e2d12305278ce0560097b7c32ba
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It functions as a link farm, with numerous URLs pointing to external sites, some of which are hosted on compromised CMS upload directories. The presence of embedded JavaScript, though obfuscated, suggests potential for further malicious actions like downloading second-stage payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9943

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://12waktu.com/contents/files/jekefizutugavolipi.pdf In PDF document text
    • http://ruihuitax.com/files/file/17901954640.pdfIn PDF document text
    • http://a-mega.ua/images/uploads/file/rubuzijidoj.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/e22f9b67667e8296a03f0544dffa47b5/5163059415.pdfIn PDF document text
    • https://surupaceanu.ro/ckfinder/userfiles/files/81954457083.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606d06cc0b10f---7478525814.pdfIn PDF document text
    • https://tourgardan.com/basefile/tourgardancom/files/50134366562.pdfIn PDF document text
    • http://ugyvednok.hu/userfiles/file/62601739498.pdfIn PDF document text
    • http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1608cb5de37854---bibovi.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/aaa7df97efde0e7eb5848cbdc29b08de/82903258946.pdfIn PDF document text
    • http://waltwhitmanclassof1965.com/clients/c/cc/ccbfa8a87e297cd67510599b8aebcb74/File/jekoxavok.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/37a5785ebb3d8ea72a252a23ddab3acd/98323342855.pdfIn PDF document text
    • http://lokalsport.no/userfiles/file/21399579096.pdfIn PDF document text
    • http://cyc.cz/pictures/clanky/files/78944870922.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/hof2nq36136rc6iasi8ilgpui4/20425048750.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/2730568283.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/17846829316.pdfIn PDF document text
    • http://www.polni.si/Images/files/bikosifelosowelun.pdfIn PDF document text
    • http://netinflux.net/userfiles/file/garimupoxek.pdfIn PDF document text
    • http://stavo-bazar.cz/userfiles/file/visuzawobol.pdfIn PDF document text
    • https://lusagroup.mobi/images/website/user/files/90357117492.pdfIn PDF document text
    • http://subventionsbetrug.de/wp-content/plugins/super-forms/uploads/php/files/so05re6ddovjrfo32r8o0q3jve/90995736185.pdfIn PDF document text
    • https://parfumzone.ro/files/file/boliwagunifubo.pdfIn PDF document text
    • https://studiovizia.com/webroot/img/content/files/84531255279.pdfIn PDF document text
    • https://frontiersneurophotonics.org/wp-content/plugins/formcraft/file-upload/server/content/files/1/1607dbfe5eb369---11484388048.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/GLLx1DTH0VQ/uplcv?utm_term=harga+new+avanza+2011+type+g+manualPDF 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_off0000c22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC22A 10928 bytes
SHA-256: 5b4d440c74d0305accee90750af3cd6ae1543f46a91aa113242ddce1f9590bfb
font_01_sfnt_off0000dba0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f3b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B2 19288 bytes
SHA-256: 9a3cbbeb7f81e773332a1148d7bbe454ddc1afb50d741623be694fe2c4453ff4

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