Malicious PDF — malware analysis report

Static analysis result for SHA-256 1eadac0b51723210…

MALICIOUS

PDF

87.8 KB Created: 2021-08-13 08:35:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 9c00459ab115042b81483161bb3f1c92 SHA-1: f12affe777e8e9ee317d69a37e175c9fb5760322 SHA-256: 1eadac0b517232100da8691688bd8ec3c01bafef96de7618b8ec7f6f61459757
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier as malicious. It contains numerous links pointing to compromised WordPress upload directories and disposable hosting, suggesting it functions as a link farm. The embedded URLs, such as 'https://philabc.ru/uplcv?utm_term=blockchain+wallet+login+via+mobile', indicate a potential phishing lure related to cryptocurrency. No scripts were extracted, but the structure and URL patterns strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://philabc.ru/uplcv?utm_term=blockchain+wallet+login+via+mobile PDF link annotation
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16115ac0d6ee7b---mekidupibisosa.pdfIn PDF document text
    • http://americandeliorder.com/uploads/files/desisinuwapoludexaderur.pdfIn PDF document text
    • http://aeskulap24h.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a429ed833f2---46827595138.pdfIn PDF document text
    • http://klefmarken.se/upload/file/wovukovinosigelefatagov.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/bezufawoxa.pdfIn PDF document text
    • http://noithatphathuy.com/Images_upload/files/79679857442.pdfIn PDF document text
    • https://szabobuszberles.hu/files/files/samanagizilor.pdfIn PDF document text
    • https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075e8037a453---bekomiworenetixatelesos.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/a4e7c3fcf0a65e6c2d0d042c4d7a32ee/6118266563.pdfIn PDF document text
    • http://bertoniamministrazione.it/bertoni/public/file/dibinegumajubur.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160c9a02468952---kakipovuzefewopu.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/d4e4f3839e5128d7df3299267b767267/titaravewolaze.pdfIn PDF document text
    • http://mitroc.com/userfiles/file/90338125301.pdfIn PDF document text
    • https://laatjehuisweerstralen.nl/upload/file/93447743370.pdfIn PDF document text
    • http://sparkpro.lv/content/file/77188067648.pdfIn PDF document text
    • https://mimpi1pusat.com/contents//files/sekenetisitaj.pdfIn PDF document text
    • http://vankouwenenmastop.nl/UserFiles/file/99755692412.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/22fb6bec9469a0256ffed698c8b22044/bomasevasebuzap.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bcd7950c54---pudokasofe.pdfIn PDF document text
    • https://detectiveoffice.net/userfiles/file/37432853598.pdfIn PDF document text
    • http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160a5782751c4b---duvonudaposezajofu.pdfIn PDF document text
    • https://www.indee-r.fr/wp-content/plugins/super-forms/uploads/php/files/b4f8f965a3e68318b1e0c2855d9e9ef5/94033037177.pdfIn PDF document text
    • https://ipcare.nl/wp-content/plugins/super-forms/uploads/php/files/f1iof9pon6sbtctdqi1m2ghmr8/20234725586.pdfIn PDF document text
    • https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160ba779cb4b3e---nutopizuteli.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_off0000f1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1A2 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000109b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B9 10848 bytes
SHA-256: 1a17f48fdba31b5976fd4d2958c4323a32c9e22f8130d50f5d97d812d2e5c63f
font_02_sfnt_off000122ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x122AC 17692 bytes
SHA-256: 17c8ac7920de21f6b44164b194bbb3762eec46c9e71bffa7243ee5f780028830

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