Malicious PDF — malware analysis report

Static analysis result for SHA-256 e76f97623dd66e09…

MALICIOUS

PDF

77.6 KB Created: 2021-02-12 19:48:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: dd00fa08ca29f2157ccec9720df1a66b SHA-1: 790fb30c3da0d6b318c3621ddff66c0a1d71455c SHA-256: e76f97623dd66e09382cbe7dd567465731792aa27f4f97096c03c690f12182cf
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The ClamAV detection further confirms its malicious nature, classifying it as a phishing trojan. The document body, though heavily obfuscated, contains references that align with a phishing lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jacksth.ru/123?utm_term=the+secret+life+of+bees+setting PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413238/normal_600a976f678f7.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/fhakheb/black_friday_iphone_deals_2019_uk_o2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_5fd65b391e6cb.pdfIn PDF document text
    • https://cdn.sqhk.co/mujexoxa/ije2mgh/fomosedab.pdfIn PDF document text
    • https://cdn.sqhk.co/tategupet/Ovjhazs/wix_filters_gastonia_nc_jobs.pdfIn PDF document text
    • https://cdn.sqhk.co/rebamomidaw/Q7Mxjb5/mint_slice_ice_cream_cake.pdfIn PDF document text
    • http://wisopenudaris.22web.org/interesting_trivia_questions_answers.pdfIn PDF document text
    • https://cdn.sqhk.co/tisufupujeli/dVfjjhb/24814847117.pdfIn PDF document text
    • https://cdn.sqhk.co/temirikuji/hfngdkh/76273978723.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/general_information_sheet_sec_non_stock_corporation.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/20663250565.pdfIn PDF document text
    • http://fetevatakipip.epizy.com/49757890728.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/28848458711.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/a_level_chemistry_bonding_questions_and_answers.pdfIn PDF document text
    • http://disobaratid.rf.gd/purijinekiv.pdfIn PDF document text
    • https://s3.amazonaws.com/paxuvagal/jerela.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/alone_movie_full_hd_filmywap.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/47649604364.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/jopibogukatexulotisat.pdfIn PDF document text
    • https://s3.amazonaws.com/dowesitobuga/gradle_build_failed_android_studio_3._5.pdfIn PDF document text
    • http://rimojiruseb.rf.gd/56916726933.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6C4 4812 bytes
SHA-256: 2dfccc12110bee4356f6272da0e3e1f4cedb3c34c6a50706a0515d70f5c2f3e3
font_01_sfnt_off0000f715.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF715 10360 bytes
SHA-256: 390079501fbcae23f9c9a41275df4b6ba1de6551a9cb7f945eff2978c59bf656
font_02_sfnt_off00011a89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A89 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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