Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e69d7ee4f27ba69…

MALICIOUS

PDF

81.3 KB Created: 2021-09-21 18:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 50c18e09344457d059b22d76bb4195bc SHA-1: 47a3a2619ffbae5b3585ff87e77d47b5f5b4e1aa SHA-256: 8e69d7ee4f27ba69628375cfb735a2e800ef74f9a099954634d7a87bd7a63afd
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV, which identified it as a phishing trojan. The document contains numerous links to external websites, many hosted on compromised CMS platforms or disposable domains, suggesting a link farm designed to redirect users to malicious content. The presence of external URI links and the overall structure indicate an attempt to deliver a payload or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://allytemp.ru/uplcv?utm_term=cheat+shadow+fight+2+level+52 PDF link annotation
    • http://aal.tw/uploads/htmlupload/files/batabesowurela.pdfIn PDF document text
    • http://preiswerte-unterkunft-papenburg.de/mediapool/88537223444.pdfIn PDF document text
    • http://euredit-editions.com/userfiles/file/46197688584.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e94673f307---78791766993.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/41326034465.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/7bbv3duidkrquj8nbb5kc203ef/wanewaluwaxefogifefo.pdfIn PDF document text
    • https://marosme.ro/hirek/file/61020445208.pdfIn PDF document text
    • http://kythuatviet.vn/uploads/userfiles/file/xitepik.pdfIn PDF document text
    • http://sushikyototogo.com/uploads/files/pupiwekefelagakav.pdfIn PDF document text
    • http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/33f50edce36771ca4d3e9cd48e30ba90/8829341432.pdfIn PDF document text
    • http://zetrade.cz/userfiles/file/75376066113.pdfIn PDF document text
    • http://fukaofoods.tw/uploads/files/202109120035055012.pdfIn PDF document text
    • https://repare-ton-smartphone.com/userfiles/file/lutunelojepivisepupaban.pdfIn PDF document text
    • https://gsacademy.ge/uploads/files/fezofijede.pdfIn PDF document text
    • https://thesmithgrouphouston.com/wp-content/plugins/super-forms/uploads/php/files/fef936a54b16dedbd81ab4a770ce9e73/wefebotigi.pdfIn PDF document text
    • https://fminterativa.net/cms/plugins/ckfinder/userfiles/files/zifarexetigudewabugebera.pdfIn PDF document text
    • http://viquadro.com/userfiles/files/96635525341.pdfIn PDF document text
    • http://xn--80affcyoc0ac1f6a.xn--p1ai/admin/modules/ckeditor/ckfinder/userfiles/files/pobone.pdfIn PDF document text
    • http://falconfam.com/ckfinder/userfiles/files/81007823182.pdfIn PDF document text
    • http://ok-poland.com/userfiles/file/kejivilitaxutomasodujij.pdfIn PDF document text
    • http://dom-nenilovo.ru/wp-content/plugins/super-forms/uploads/php/files/89c00b8f46604aa4825d6b34d28f4bd0/75440824962.pdfIn PDF document text
    • https://jiu-hang.com/upfiles/editor/files/fejisom.pdfIn PDF document text
    • http://maility.pl/_ADRESuserfiles/file/veriwawufekiki.pdfIn PDF document text
    • http://goodlife88.com/uploads/files/47017535310.pdfIn PDF document text
    • 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_off0000d86e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD86E 17776 bytes
SHA-256: 0726315d104b294cdceb0aca2491e99e18ab609d8550c4e83f0a9262db5d2bf7
font_01_sfnt_off00010697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10697 10868 bytes
SHA-256: fc8d39f051cb5651374aa4b338cd0f21def633617b21c18bfa311dbc18734c35
font_02_sfnt_off00011fd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FD5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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