Malicious PDF — malware analysis report

Static analysis result for SHA-256 e002645a688532f6…

MALICIOUS

PDF

70.7 KB Created: 2021-10-02 10:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 1eb750d16f3e5e73cc343a1db4a234f3 SHA-1: ace86c89ff5eac797c2c86de4b77c4a13a7852eb SHA-256: e002645a688532f61c0043dda6afce92b91fb7d88e52a5df0181c2e29c172b59
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external URIs and link farm heuristics, indicating an attempt to direct users to potentially malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious document, possibly leveraging JavaScript for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://inwebjor.ru/uplcv?utm_term=red+fade+to+black+hair PDF link annotation
    • http://nktrading.qa/file/files/kuwejudolanisa.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/161419e8934944---pebosulikagakawusik.pdfIn PDF document text
    • http://xn--72c7caerxx0d3a9eve.com/UserFiles/File/paxenita.pdfIn PDF document text
    • http://www.gabrielamaciel.net/images/content/file/ximaroduxirixudulajopur.pdfIn PDF document text
    • http://getwealthythisyear.com/ckfinder/userfiles/files/vibuwimiposediv.pdfIn PDF document text
    • http://qdjshg.com/files/file/bolekabixogovekixoko.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/1613ab56679358---4771050711.pdfIn PDF document text
    • http://dison.cn/filespath/files/20210918074535.pdfIn PDF document text
    • http://www.colegiometa.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/1614f52d4ba600---97913218658.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/161372a8148085---7953080642.pdfIn PDF document text
    • http://ersenergy.com/UserFiles/file/vametadu.pdfIn PDF document text
    • http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/16156e08a7de58---5596875947.pdfIn PDF document text
    • https://drticket.ir/basefile/drtiketcom/files/17338780476.pdfIn PDF document text
    • https://sanipacific.com/attachment/file/rikagirejusobokipomob.pdfIn PDF document text
    • http://djapm.com/userfiles/file/tixivijizekogokewavumube.pdfIn PDF document text
    • https://www.landalastadservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613eed8116c14---sekelekoxowelagitosofetun.pdfIn PDF document text
    • http://aftp.bg/userfiles/file/fipipujelezuzojexoresuf.pdfIn PDF document text
    • http://homesunshinepharma.com/upload/files/ruvemukoso.pdfIn PDF document text
    • http://www.magicapro.it/wp-content/plugins/formcraft/file-upload/server/content/files/1614b53cabbea1---46257082068.pdfIn PDF document text
    • http://katela.net/userData/board/file/kaferugodawabakaw.pdfIn PDF document text
    • https://mywayrtk.com/userfiles/file/nujoxidixoj.pdfIn PDF document text
    • https://mudraconsultancy.com/uploads/files/namawifijexexanododun.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_off0000b2ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2ED 16380 bytes
SHA-256: 090e8e553c7e71a3398df7b1bb94a1be36b2d4c3a1e65efcc74e8c8d80eb6524
font_01_sfnt_off0000dcb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCB4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f4cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CB 10580 bytes
SHA-256: f2fea964cd577570a0e387b3be974d47e8cbd398b802b4787b9145525b346826

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