Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5e60e14f7d3956c…

MALICIOUS

PDF

89.9 KB Created: 2021-09-04 23:02:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 7240a9e34e5bf22fc2fb44858ca9d8df SHA-1: a8a2138b3e10a57308f6d90e13000fd4e52fd313 SHA-256: e5e60e14f7d3956c4ded5d195c26ed9d4e259f2a764be3445ff42d8c85bb8d29
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of external URLs, many hosted on compromised CMS platforms or disposable domains, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the nature of the URLs and the heuristic firings point towards a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

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=doublespeak+william+lutz+pdf PDF link annotation
    • https://anpheatingandac.com/nbloom/fckuploads/file/jedokikokum.pdfIn PDF document text
    • http://hamyarsanatco.com/ckfinder/userfiles/files/tipinerudizidiz.pdfIn PDF document text
    • https://glasschneider.koeln/wp-content/plugins/super-forms/uploads/php/files/ljbl460gagbhigc7pb96cuk6sl/zorokenazivasafuvepu.pdfIn PDF document text
    • https://damsindia.org/admin/uploads/file/pepotuwesuredokem.pdfIn PDF document text
    • http://caryhigh1987.com/clients/41333/File/71106467897.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4bb443667---rimalalofimawowiganezijil.pdfIn PDF document text
    • http://xn----dtbsgbucafmmaf.xn--p1ai/servimages/editor/files/losujew.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/lusumoxi.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608abee4e5d89---gafegirikoturavidi.pdfIn PDF document text
    • http://ersatzmonitor.de/userfiles/file/sijarekosozi.pdfIn PDF document text
    • http://xn--m1age8bh.xn--p1ai/files/file/livifigapumis.pdfIn PDF document text
    • http://imobiliariaimperio.com/files/files/89157812472.pdfIn PDF document text
    • http://goref.ru/files/file/zojerokopodakilesud.pdfIn PDF document text
    • http://hiredriver.com/uploads/assets/files/54157120748.pdfIn PDF document text
    • http://www.ufolep-69.com/contenus/files/6898644708.pdfIn PDF document text
    • https://sgpropertylawyers.com/wp-content/plugins/super-forms/uploads/php/files/01733adb9c93c0753db0dfd03445e6fa/31783727235.pdfIn PDF document text
    • http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d3adb21e1ed---satidato.pdfIn PDF document text
    • http://tara77.com/clients/46590/File/futudofajobunorapuk.pdfIn PDF document text
    • http://www.canadavisaservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc86acebd7---fogeg.pdfIn PDF document text
    • https://wtmasonry.com/ckfinder/userfiles/files/kipowijat.pdfIn PDF document text
    • http://eko-inwest.eu/upload/file/rumikemosodumivutozilow.pdfIn PDF document text
    • https://searchlink.org/userfiles//file/21480632438.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/misumipubagazefewojodo.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_off0000f6bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6BB 19244 bytes
SHA-256: 70fcdf140f6e5835ebad89416fddd0694c6b14aa008e21ecdd21145aef1887fd
font_01_sfnt_off000128e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128E2 10932 bytes
SHA-256: a9e2fa66df2b92dd80d0e49e7ca8a351ac7af606c89244c1b7dc99fd1805177b
font_02_sfnt_off00014228.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14228 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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