Malicious PDF — malware analysis report

Static analysis result for SHA-256 bce034a44307911a…

MALICIOUS

PDF

76.2 KB Created: 2021-04-02 10:43:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 06b7981cd8d4d34397ca5a31e25960ed SHA-1: 729b124f3acdbedbd97ba91d56ec4917039ef5e2 SHA-256: bce034a44307911a8b2b7fe1fd5cda6c788a4ac7f3dcc1dade74da85b7b7095e
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 0.9996

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://dugedepap.ru/award?keyword=fce+cambridge+sample+test+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4414360/normal_5fcc40f5a6514.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/binamakififasamuxe.pdfIn PDF document text
    • http://jupapopikok.22web.org/how_do_i_look_up_driving_record.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369519/normal_604f1440c4302.pdfIn PDF document text
    • http://dosodowonuraf.iblogger.org/the_book_of_giants_dead_sea_scrolls.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408475/normal_6006a4c3a01f1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445726/normal_5ff26598b9583.pdfIn PDF document text
    • http://resipowepo.getenjoyment.net/97588001175.pdfIn PDF document text
    • https://kuwewukes.weebly.com/uploads/1/3/1/6/131636575/debiwujusoj.pdfIn PDF document text
    • https://xopugexufejan.weebly.com/uploads/1/3/4/7/134709921/weladarin_vefidogodo_nevanodab_dezuvewuxorolo.pdfIn PDF document text
    • https://roxagidu.weebly.com/uploads/1/3/4/7/134748987/pekijoxo-fokarasode-nomedid.pdfIn PDF document text
    • http://lenagilos.22web.org/canada_food_guide_9_month_old.pdfIn PDF document text
    • https://japilulijerimu.weebly.com/uploads/1/3/0/7/130738614/2ab0b5e30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459028/normal_60392a53e1ccd.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/61593902126.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460449/normal_5fdc2ee2dd6a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486522/normal_60259b42f25c1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_6035584d03d0e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lafagelupuf.myartsonline.com/definicion_de_amistad_segun_autores.pdfIn PDF document text
    • http://pogelejulogowev.rf.gd/lisulimuxelifomojari.pdfIn PDF document text
    • http://fatifosavo.rf.gd/ratolebotinupadajog.pdfIn PDF document text
    • http://zazoxovopedoxex.rf.gd/35732145110.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_off0000eb6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB6C 5568 bytes
SHA-256: 50414d6bbe79c6a6b9d3e666e8899397805978bea61e32d937b36b0b4c842469
font_01_sfnt_off0000fe40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE40 10976 bytes
SHA-256: 4dc64bb8c06d22c968a7f7e3de3167000182ecb6a961e14300a57e8a0f557ea8

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