Malicious PDF — malware analysis report

Static analysis result for SHA-256 007dda5f3e895b6b…

MALICIOUS

PDF

71.5 KB Created: 2021-03-01 00:53:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: f021c4999f27090d2d0f0d831ef23bb4 SHA-1: 89c9447139a82c358b324efe24b58d8925a6a1d8 SHA-256: 007dda5f3e895b6b8d9510bf0fe5848eda041c37ecc682f4b3e60cb1f48fdb9c
134 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is a phishing lure and a link farm, with one external URI pointing to 'seumenha.ru'. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing attack designed to trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/award?keyword=how+do+i+program+my+avaya+1416+phone+buttons PDF link annotation
    • http://nigoguno.scienceontheweb.net/68219277644.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502248/normal_5ffc0dd7d8424.pdfIn PDF document text
    • http://komozazene.getenjoyment.net/27023484774.pdfIn PDF document text
    • http://ruluzuzadol.mypressonline.com/how_to_calculate_vif_in_sas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405179/normal_5fcd890105952.pdfIn PDF document text
    • http://kakolamilasaru.medianewsonline.com/59493209436.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487641/normal_5fccd82d8bde7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412757/normal_5fe83f8ff0b9e.pdfIn PDF document text
    • http://bunejegijo.22web.org/63100645545.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tujumuvozekusa.epizy.com/gewivut.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/pobumilusomobeg.pdfIn PDF document text
    • https://s3.amazonaws.com/taguxif/hummingbird_sheet_cake_using_cake_mix.pdfIn PDF document text
    • https://s3.amazonaws.com/zobuwubedak/hp_officejet_4500_wireless_not_printing_wirelessly.pdfIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/home_design_3d_by_uu.pdfIn PDF document text
    • http://fererugame.epizy.com/cfop_algs.pdfIn PDF document text
    • http://xaligapuk.epizy.com/jajuxuxovatulin.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d93c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD93C 5988 bytes
SHA-256: 4ae0bfe9478d8622f57c43838ad7867cc3a90dcbdb8d1594c5446772f4410f47
font_01_sfnt_off0000ed9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED9A 10260 bytes
SHA-256: 4fa256f3fca33728b475609b49cc9a7ce861807ed560d8e00e60bf978af8a072

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