Malicious PDF — malware analysis report

Static analysis result for SHA-256 a272792911785a89…

MALICIOUS

PDF

65.9 KB Created: 2021-01-22 10:00:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fe94e914472376928c9e2a68b182a5d9 SHA-1: 37e6d347a161b42b75a52ff041bcd0ddf305a0d7 SHA-256: a272792911785a89f7d47166303abbbf062b91205ec37f629631609f7b92ad58
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high probability of malicious intent. It contains an embedded URI pointing to 'https://jacksth.ru/123?utm_term=49.5+cm+to+inches', which is likely a phishing or malware distribution lure. The document body, though heavily obfuscated, contains references to units of measurement and application names, suggesting a deceptive pretext for the embedded link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jacksth.ru/123?utm_term=49.5+cm+to+inches PDF link annotation
    • https://cdn.sqhk.co/zawafolor/PLIvejd/ny_company_stores.pdfIn PDF document text
    • https://site-1233605.mozfiles.com/files/1233605/bowmasters_apk_download_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/pigalixow/jfjjggg/gifew.pdfIn PDF document text
    • https://site-1171851.mozfiles.com/files/1171851/mugodalulewuf.pdfIn PDF document text
    • https://cdn.sqhk.co/zetikitor/hgihbie/gitigefitimidofinosiga.pdfIn PDF document text
    • https://site-1177829.mozfiles.com/files/1177829/63240602520.pdfIn PDF document text
    • https://cdn.sqhk.co/dogutadova/jgjijCv/pukunedubobobemuwaj.pdfIn PDF document text
    • https://site-1172464.mozfiles.com/files/1172464/my_singing_monsters_hack_apk_android.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/tezofuretejom/minecraft_server_1._14_3.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/wodimuzumetujuzuzazivibo.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/97628464230.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/bluetooth_app_for_windows_xp.pdfIn PDF document text
    • http://vepilezora.epizy.com/gpat_previous_question_papers_with_answers.pdfIn PDF document text
    • http://tirixerunifadi.rf.gd/7th_grade_algebra_worksheets_with_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/kalanejaxutilif/jisemiroxutigilesolorabe.pdfIn PDF document text
    • http://wafogaz.rf.gd/48669792098.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/bsc_magazine_english.pdfIn PDF document text
    • http://ludujefu.epizy.com/azure_ad_proxy_connector.pdfIn PDF document text
    • https://s3.amazonaws.com/wanasuvedigo/indemnity_form_template_personal_training.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/69906445093.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c618.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC618 5004 bytes
SHA-256: e983ddfa7bfb9fb97eec6a56918929ce16843a3dfab271a54dec9d80394f0cbc
font_01_sfnt_off0000d711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD711 10496 bytes
SHA-256: b9876746827da5f9512befe7be44cf66ac18b6be30c5078df53dd1d4086e17ee

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