Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc5d5d63b63569ab…

MALICIOUS

PDF

76.9 KB Created: 2021-03-01 03:26:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ead78df65786098db0d6efa2932861fd SHA-1: 2ce7e46e83a175329a34bbe6dbbb56d77b0524c1 SHA-256: dc5d5d63b63569abdf4ebdc64d540bcb98a83f2f6ac8830368b8917352a868c8
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by heuristics as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://dafemum.ru/123?utm_term=braava+jet+240+cleaning+solution+alternative
    • https://vadopesi.weebly.com/uploads/1/3/0/7/130738994/795075.pdf
    • http://lapitubemexidi.mywebcommunity.org/wujegutugitiganedojidixi.pdf
    • http://fashion-deals.xyz/gelikisuwafojujidofisefjvv.pdf
    • http://xegazinijitup.mywebcommunity.org/west_bend_bread_machine_recipe.pdf
    • http://goldenframecollision.com/leserutes705xo.pdf
    • http://jobs-ingenieur.best/best_android_chat_app_without_phone_numberi3znj.pdf
    • http://idem-peshkom.ru/the_santa_ana_by_joan_didion_rhetorical_deviceshbmkc.pdf
    • http://kadanijojabuf.mywebcommunity.org/a_fine_fine_school_book_read_aloud.pdf
    • http://trylait.club/56352766151hozcc.pdf
    • http://kudusakepupa.sportsontheweb.net/metodologia_dela_investigacion_cesar_bernal_4ta_edicion_gratis.pdf
    • https://japiravonasuv.weebly.com/uploads/1/3/4/6/134644749/bimufiwagulo_vejamow_dofekogamuz.pdf
    • https://fupetevufado.weebly.com/uploads/1/3/1/3/131379724/63fa331e67f99f7.pdf
    • https://malojedatev.weebly.com/uploads/1/3/0/8/130813840/zoxepageruzuni_jenidekiti_movavunox.pdf
    • https://sodukosikel.weebly.com/uploads/1/3/4/5/134598711/nerulodeg.pdf
    • https://sepanafawo.weebly.com/uploads/1/3/4/3/134316973/8388269.pdf
    • https://zixavuxo.weebly.com/uploads/1/3/1/3/131398386/db6956280f3.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://vilepobafomunow.atwebpages.com/vekivoxomesesalemuwonatav.pdf
    • http://lobopekogolo.onlinewebshop.net/81056172821.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ec3f.bin
6b17c1da1c06b7abb16f92a24e00dda000877f6f3d3a9d01815e58f26d69d4b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEC3F 5512 bytes
font_01_sfnt_off0000ff1f.bin
5a5a37a56c08eff122cfed772dff57ec9dd9a6a4c2a7dd93673f8b0265267559		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1F 11508 bytes

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