Malicious PDF — malware analysis report

Static analysis result for SHA-256 ede2a6e4afaeeb88…

MALICIOUS

PDF

83.8 KB Created: 2021-07-13 17:12:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 2b0171d2f0f6fcc7a2efad9274fd51c0 SHA-1: d42f4f613f62462b367ace76233eb14672a5a086 SHA-256: ede2a6e4afaeeb88665a9122f6427636f1345989fabc1b34509eb62fbf6536fd
156 Risk Score

Malware Insights

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

The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, with numerous URLs pointing to compromised WordPress sites and other disposable hosting. These links likely lead to further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160adc1e0df8b6---nuxuwepejifekeganutanil.pdf In PDF document text
    • http://podiummoda.ru/userfiles/file/duxitejilizemevogenuz.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c774a30c57e---81029513956.pdfIn PDF document text
    • http://www.uniformsolutionsforyou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d39ac9613c---pavavaxujufewomeruw.pdfIn PDF document text
    • http://jungvassar.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/zepuzumejetagatukika.pdfIn PDF document text
    • https://sunsoftinfoway.net/ckfinder/userfiles/files/gepexipow.pdfIn PDF document text
    • http://penoplex24.ru/wp-content/plugins/formcraft/file-upload/server/content/files/160848051f176e---febogudugazuruwusir.pdfIn PDF document text
    • https://balbok.net/admin/ckfinder/userfiles/files/guxijuguxi.pdfIn PDF document text
    • http://www.uvhk.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a35401c9174---88985758959.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/a02211d0ad930964c5affe825f1354e0/loxumakadotupuvabekokojiw.pdfIn PDF document text
    • http://powerfalcon.net/uppic/files/53790205842.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/8dn0oeqka92fbg89b6imv14b10/8548533437.pdfIn PDF document text
    • http://basyapiemlak.com/yukleme_klasoru/userfiles/file/vepulafotasewatimal.pdfIn PDF document text
    • https://firsatpin.com/calisma2/files/uploads/29103209475.pdfIn PDF document text
    • http://www.lifestaralberta.com/wp-content/plugins/formcraft/file-upload/server/content/files/160793a5f6ccd0---21201756747.pdfIn PDF document text
    • https://www.engltg.com/wp-content/plugins/super-forms/uploads/php/files/819555bd6f53301e633c3accb999b30c/71558081098.pdfIn PDF document text
    • http://arqing.es/ckfinder/userfiles/files/93808785500.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/1607155944e322---51057995824.pdfIn PDF document text
    • http://vitalenzyme.com/uploads/fckupload/file/xapikivivegixopanimabir.pdfIn PDF document text
    • http://martom24.pl/martom/userfiles/file/repemoxoje.pdfIn PDF document text
    • http://ozona.pt/wysiwygfiles/file/xikenoximikepawokajov.pdfIn PDF document text
    • http://nowyhotelik.pl/userfiles/file/logojasip.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=emotional+regulation+in+early+childhoodPDF 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_off0000e60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE22 10848 bytes
SHA-256: ec344c9d352ba9de15147b99d181765cc4d051a6ecbeb24881bd26ac7e47cf31
font_02_sfnt_off000116b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B8 16636 bytes
SHA-256: 7abf77be08d8d0cddc08d2571c1cfa9d17ef0f7376391423526eaf52ac773178

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