Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dba67f1ca7fb1f0…

MALICIOUS

PDF

387.6 KB Created: 2021-04-04 11:45:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: e9a0e696165f0e2dc85768b2ffd112b1 SHA-1: 5ad1588c7d5dcde32100b7d9e013ae4329fabb0e SHA-256: 1dba67f1ca7fb1f003416ddce84bbde58421510d89925f02ec4f314b03d1b93f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9365

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xajibur.ru/award?keyword=administracion+publica+federal+paraestatal+pdf PDF link annotation
    • https://metenesepagozo.weebly.com/uploads/1/3/4/7/134710396/webutolitikubiludafu.pdfIn PDF document text
    • https://nupinegudoxaxu.weebly.com/uploads/1/3/5/3/135350485/ee8a2.pdfIn PDF document text
    • https://mezinetoxapim.weebly.com/uploads/1/3/4/8/134887379/sozenopijonit.pdfIn PDF document text
    • http://supermagazforsale1.xyz/snow_like_ashes_meirao9cu0.pdfIn PDF document text
    • http://idealica-italiaufficiale.site/favosobumavidenabondd.pdfIn PDF document text
    • http://bunagutafa.getenjoyment.net/evening_prayer_humperdinck.pdfIn PDF document text
    • https://jileninaniwepuz.weebly.com/uploads/1/3/4/7/134771173/f66d91.pdfIn PDF document text
    • http://dokojekiferej.mygamesonline.org/learn_german_by_podcast.pdfIn PDF document text
    • http://wijetaz.mypressonline.com/ks2_maths_problem_solving.pdfIn PDF document text
    • https://fililajivivumir.weebly.com/uploads/1/3/4/4/134456316/dafulojime_vamala_lujesojigozu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mojivikapeti/stone_soup_story_online.pdfIn PDF document text
    • https://s3.amazonaws.com/zarevizebi/ielts_reading_book_9_test_1_answers.pdfIn PDF document text
    • https://06ebba1c-c738-45d4-b58d-83edbdcc9420.filesusr.com/ugd/b14caa_f73fd8f121ec4e08a8136b9336b707be.pdf?index=trueIn PDF document text
    • http://junulanomelab.rf.gd/how_to_use_wps_button_on_hitron_router.pdfIn PDF document text
    • http://makowadoka.epizy.com/el_chac_mool_cuento.pdfIn PDF document text
    • http://sagunum.rf.gd/consumismo_definicion.pdfIn PDF document text
    • http://kubosew.epizy.com/beatles_chords_download.pdfIn PDF document text
    • http://zodofujeki.atwebpages.com/esc_ventricular_arrhythmias.pdfIn PDF document text
    • https://4be8a7ba-6c9a-47a4-99fc-a5961b41a404.filesusr.com/ugd/132250_bd3ce8d5bae74643a75f487bc1437f9b.pdf?index=trueIn PDF document text
    • https://ac4cd5cf-e861-4b1b-a585-e47049f737a6.filesusr.com/ugd/843280_10de5e81c9934fef96eaff1d5af09f6a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/luvetanobolewot.pdfIn PDF document text
    • https://677e6977-fc43-48b2-ac81-16e478c8573b.filesusr.com/ugd/3750c2_c456fa20f9a045c294e49d705a52d794.pdf?index=trueIn PDF document text
    • http://zuxuxakoves.rf.gd/apache_poi.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_off0005c2a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2A5 5432 bytes
SHA-256: 16ef7afeebd2f523d2dbe74b19a26dd824e99c2fe32e7be029da94e7e5d5789b
font_01_sfnt_off0005d4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4FB 12492 bytes
SHA-256: ae29041e356ab39e243b39e09c6244ec55aeb98be288e0dcf63b4abcc6e99cb1

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