Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34e300d692deb5b…

MALICIOUS

PDF

73.7 KB Created: 2021-02-24 16:07:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: b1039fd615fc26e0ece63d4a699dff8a SHA-1: 4c948a137dc824ced63de49176eab79577aa66ce SHA-256: a34e300d692deb5b166ac717722e150597d0608eba20778303de645573ff2552
96 Risk Score

Malware Insights

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

The PDF document contains a lure related to a "Sony vaio operating system not found" error, directing the user to a URL that likely hosts a malicious payload. The presence of multiple external URLs and a high ML classifier score indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it is designed to exploit vulnerabilities or trick users into downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://leonvi.ru/strik?utm_term=sony+vaio+operating+system+not+found+windows+7+fix PDF link annotation
    • http://mail-autoscout24.net/arijit_singh_song_ringtone_download_202066dam.pdfIn PDF document text
    • https://pobapuzelikawe.weebly.com/uploads/1/3/0/7/130739661/nuwukufixabugalalosa.pdfIn PDF document text
    • https://ruvawuwejijexut.weebly.com/uploads/1/3/0/8/130814193/nuzugewi.pdfIn PDF document text
    • https://tajixuxax.weebly.com/uploads/1/3/4/7/134751877/8891012.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/what_type_of_oil_to_use_in_a_briggs_and_stratton_generator.pdfIn PDF document text
    • http://punejew.mygamesonline.org/kixijorubulidot.pdfIn PDF document text
    • http://hargotel.xyz/xefepjjdvt.pdfIn PDF document text
    • http://mevukavotidu.getenjoyment.net/mainstay_computer_desk_instructions.pdfIn PDF document text
    • http://littlenat.space/lupozoralezutupipawawnps93.pdfIn PDF document text
    • http://zonerokemub.getenjoyment.net/38968833195.pdfIn PDF document text
    • https://gokepitamewema.weebly.com/uploads/1/3/5/3/135325242/bufunibuzebe.pdfIn PDF document text
    • https://zoparidozuxeb.weebly.com/uploads/1/3/5/3/135390671/xadukuwurememukav.pdfIn PDF document text
    • http://wejowadizabudex.mypressonline.com/what_is_the_latest_version_of_wii.pdfIn PDF document text
    • http://bilkan.fun/kuvosubiwenudinokiis30.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kavibajegis.onlinewebshop.net/metodologia_de_la_investigacion_cuantitativa_segun_autores.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/brave_frontier_mod_apk_latest_version.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/bepofatakaxirebevunukama.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/90970414111.pdfIn PDF document text
    • https://s3.amazonaws.com/wujafivabipo/jurnal_psikologi_budaya_organisasi.pdfIn PDF document text
    • http://donijexufenu.onlinewebshop.net/is_an_ak_47_more_powerful_than_a_ar_15.pdfIn PDF document text
    • https://s3.amazonaws.com/dakebesuvum/doninn_audio_editor_pro_apk_free.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_off0000e0e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E2 5832 bytes
SHA-256: 576111d4d476e43765d8be36578461415678de8ebe55ed935a0ca5f2c4c65934
font_01_sfnt_off0000f4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D7 10572 bytes
SHA-256: 78fae4bbb798945deebdedf0092c5251573535bf4347c904f2b6d767d222a8fd

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