Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9842e1349df3da5…

MALICIOUS

PDF

72.3 KB Created: 2021-03-01 21:51:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d69897b1e454408552da9de5a893ef32 SHA-1: 031d85a78bf2c91641111388baefe4e3851ffb13 SHA-256: a9842e1349df3da5f319fb16330308e0d35f44ae09fcd6829e280e3d90422f09
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a suspicious domain, identified by heuristics as a potential phishing or malware distribution vector. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://xajibur.ru/wix?keyword=similar+shapes+and+scale+drawings+worksheet+7th+grade PDF link annotation
    • https://cdn.sqhk.co/vawadawuleja/iZ27Mig/dry_ice_blasting_equipment_suppliers.pdfIn PDF document text
    • https://cdn.sqhk.co/guvawatuzax/tGjagfy/empire_warriors_td_premium_tower_defense_games_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/zivudasexoni/6phaojb/cheap_bluetooth_radio_fm_transmitter.pdfIn PDF document text
    • https://cdn.sqhk.co/jimevexir/RghiaUq/social_media_advertising_success_stories.pdfIn PDF document text
    • https://cdn.sqhk.co/jevipugirofi/gBgdhcL/my_story_choose_your_own_path_download.pdfIn PDF document text
    • https://cdn.sqhk.co/jogekiluse/rMoQjgl/84650634121.pdfIn PDF document text
    • https://cdn.sqhk.co/tuxisilogok/hb4Hjda/3d_maze_man_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nemazuwigumo/PzOgcZ7/money_clicker_bitcoin_mining.pdfIn PDF document text
    • https://cdn.sqhk.co/bukoxomule/jhFji6E/88522202107.pdfIn PDF document text
    • https://cdn.sqhk.co/businaxidare/bjbgdEK/nogavasiwozaduko.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/kefiperizonofu/elsevier_latex_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sukobogixe/piwatoxiluzuwelituwita.pdfIn PDF document text
    • https://s3.amazonaws.com/dorulusof/14086448642.pdfIn PDF document text
    • http://deroxemonak.epizy.com/how_to_do_interpretation_of_ratio_analysis.pdfIn PDF document text
    • http://wukefomirufiza.rf.gd/b_e_c_ki_full_form.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/beats_studio_wireless_4.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_off0000daca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDACA 5824 bytes
SHA-256: 8a6f044289b036b3c67895d3af859ea81970860755170daaa7d118eca817e78d
font_01_sfnt_off0000ee87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE87 10796 bytes
SHA-256: 2c8cca7d620f89f1d9b50902e085d296055edec1fb8d7b03536a50dfda5b40f2

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