Malicious PDF — malware analysis report

Static analysis result for SHA-256 0072d003f2bc7f4d…

MALICIOUS

PDF

81.1 KB Created: 2021-03-31 11:56:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e62658230589c24ce7383595b90587eb SHA-1: 4bff10e44d58e7fb8c4b29812f7011f16af0aa1a SHA-256: 0072d003f2bc7f4d2518763f55cf4771e971b69b04ed9623e3360f23de6fb10c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://golowaki.ru/award?keyword=the+grill+masters+essential+barbecue+recipe+book+pdf PDF link annotation
    • http://rajajime.mypressonline.com/delegation_of_financial_powers_2020.pdfIn PDF document text
    • http://wusator.mygamesonline.org/bond_portfolio_investing_and_risk_management_vineer_bhansali.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463554/normal_5fec379f9350c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401558/normal_6057b4480379c.pdfIn PDF document text
    • https://cdn.sqhk.co/dojaxeje/Riahgjd/44576636980.pdfIn PDF document text
    • https://cdn.sqhk.co/vujenibolo/fhgBaie/cloudflare_status_page.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413454/normal_5ff168767a995.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472773/normal_5fff5f4800c80.pdfIn PDF document text
    • http://pokavitapizinuv.iblogger.org/guxawup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369518/normal_5fccd87e30159.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/9n7sicz/aces_of_the_luftwaffe_switch_amazon.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xedaxabefax.rf.gd/sozewilofujopu.pdfIn PDF document text
    • http://wapofele.epizy.com/how_to_set_digital_timer_on_vaillant_ecotec_plus_boiler.pdfIn PDF document text
    • http://nowivopikuzud.epizy.com/guduwedukuruwevanozifezo.pdfIn PDF document text
    • http://kaxuwenewutexu.myartsonline.com/juwamavit.pdfIn PDF document text
    • https://s3.amazonaws.com/devuxuzejozam/putobufatuv.pdfIn PDF document text
    • http://lobopekogolo.onlinewebshop.net/birupesituzorekomo.pdfIn PDF document text
    • http://wusuposakatoxel.myartsonline.com/risk_juego_reglas.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/dapuvipajifevizopa.pdfIn PDF document text
    • https://s3.amazonaws.com/vovabagubajegeb/62585680107.pdfIn PDF document text
    • http://waminakukivexo.rf.gd/88023236646.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/mazalekenudoluniz.pdfIn PDF document text
    • https://s3.amazonaws.com/zosevid/malayalam_movies_2015_sites.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_off0000faee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAEE 5720 bytes
SHA-256: 88e428b8cba458d19e16697f96ab443446998650f440be6f622d068b08f1cae3
font_01_sfnt_off00010e3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E3D 12168 bytes
SHA-256: 07556d886dc47b73acc7df1aaee26c2277b82caa622e50eb559ceb9a46461421

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