Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25a35ccfe82cb3c…

MALICIOUS

PDF

70.9 KB Created: 2021-03-29 09:48:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f38682fe4862d459e82c92c3074b9405 SHA-1: d2f83c78263b0044fc7c823c29d59a835742b59a SHA-256: a25a35ccfe82cb3c8160827c178ee93abc9dbe20580b1a389370a4733cec0215
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a phishing trojan. It contains an embedded URL that mimics a search result for a book, suggesting a lure to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI heuristic indicate it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/wix?keyword=the+art+of+talking+to+anyone+rosalie+maggio+pdf+download
    • http://jagojurezowu.22web.org/24207750148.pdf
    • http://tonorubur.22web.org/fufozimikew.pdf
    • http://bratskpravojur.ru/gunefajijofefudebisexarorvv6ed.pdf
    • http://kumululurug.scienceontheweb.net/o_que__trafego_pago_marketing_digital.pdf
    • https://rusakubasarozu.weebly.com/uploads/1/3/4/2/134266120/senamewin.pdf
    • http://iminn.ru/antithrombine_3u4bhw.pdf
    • http://zasopawemumobaw.iblogger.org/how_to_use_zoom_h5.pdf
    • http://vetebozo.mypressonline.com/3639472730.pdf
    • http://nibewubixela.getenjoyment.net/nuwezabawetejisesoni.pdf
    • http://nerroba.info/dictionary_french_english_translation_onlinekytyq.pdf
    • https://farunigi.weebly.com/uploads/1/3/4/7/134716297/gavadugixukapazer.pdf
    • http://romeital.space/konelasumikajeririjanodo07zjb.pdf
    • https://jawokisejul.weebly.com/uploads/1/3/4/6/134601468/8043471.pdf
    • https://mafekesajivirik.weebly.com/uploads/1/3/4/3/134381466/jafedefi.pdf
    • http://myshoes.moscow/denididubixaburepezoxoc9k.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dafiwogi.rf.gd/atomic_and_molecular_physics_lecture_notes.pdf
    • http://xodolipifonabo.epizy.com/wesid.pdf
    • http://wotidupodugi.myartsonline.com/self_dependent_synonyms_in_hindi.pdf
    • http://givoresop.epizy.com/toguwazonusesufok.pdf
    • http://somekos.epizy.com/chemistry_balancing_chemical_equations_worksheet_answer_key_with_work.pdf
    • https://43fe4710-460a-4ad3-90dc-2dd795c51528.filesusr.com/ugd/a32c20_7b9436a952cf4d608f3a7ebdc65f4f59.pdf?index=true
    • https://65d0a56f-4074-4e8f-9acc-29e6f8e8f663.filesusr.com/ugd/37655d_597ef5c0361e4fc6982faa7538da036c.pdf?index=true
    • http://senesijosezetu.myartsonline.com/89371893768.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_off0000d63b.bin
519d911ce60117a8c3c3d8e824fbe0217fb513ab7a77be247896bd9916d60180
pdf-font-stream PDF embedded font (sfnt) at offset 0xD63B 5660 bytes
font_01_sfnt_off0000e96b.bin
9d3303acfd5723438e009b04f33807af6197b863563024569cc8e1fe615aa7d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xE96B 10668 bytes