Malicious PDF — malware analysis report

Static analysis result for SHA-256 96a049765b9f01b8…

MALICIOUS

PDF

76.5 KB Created: 2021-03-16 13:42:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0c2ceb7563558b37c98d99dcb18912e2 SHA-1: c06de2586fc09224df79cef3358098f2cd2f765b SHA-256: 96a049765b9f01b817baaba0d6570be108bdc940017a2650f4946dc4d1ac3703
156 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 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 0.9998

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://crophysi.ru/123?utm_term=gram+staining+lab+report+references PDF link annotation
    • https://malafusid.weebly.com/uploads/1/3/2/8/132815748/tofofu-jugawo-zojolep.pdfIn PDF document text
    • https://kemumapuvepuvi.weebly.com/uploads/1/3/4/3/134311950/wazukokedo.pdfIn PDF document text
    • http://kismykeitio.best/death_of_a_salesman_penguin_classicse24of.pdfIn PDF document text
    • http://tehnopolis.org/getozagsfc6m.pdfIn PDF document text
    • http://tufofol.medianewsonline.com/que_harias_si_no_tuvieras_miedo_curso_online.pdfIn PDF document text
    • https://cdn.sqhk.co/vozaxodep/cjakhcW/do_not_fall_io_mod_apk_unlimited_money.pdfIn PDF document text
    • https://tekofudarazot.weebly.com/uploads/1/3/1/3/131381521/wovuxej_ditolivogile_bagikata_fopinej.pdfIn PDF document text
    • http://venolilixe.mygamesonline.org/xuwupugume.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/0PLfz3I/fatal_race_car_crashes_youtube.pdfIn PDF document text
    • https://vagibize.weebly.com/uploads/1/3/4/6/134618654/7645a.pdfIn PDF document text
    • http://hookup157.fun/can_you_ballistic_weave_bos_officer_uniformvx9p0.pdfIn PDF document text
    • http://sunakijabe.sportsontheweb.net/exerccios_tabela_peridica_9_ano.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/fizaxo/dip_pen_calligraphy_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/cooper_discoverer_htp_review_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/juliziwojatige/tarot_reading_for_love_life.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/lc1d150_contactor_datasheet.pdfIn PDF document text
    • http://rujidafedisezu.atwebpages.com/fedivadim.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/lozoxubo.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_off0000ee61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE61 5508 bytes
SHA-256: 1bf0e132c94fe99528e06f8b7c73788fd570f22217dab8a4355294ea8cdab1bf
font_01_sfnt_off00010108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10108 10664 bytes
SHA-256: f864cc15a2762c49b4b36f41114cc5f3fe9b434f7f75c74dbc163e2786a38a5f