Malicious PDF — malware analysis report

Static analysis result for SHA-256 271ae07f41db85fc…

MALICIOUS

PDF

76.0 KB Created: 2021-03-19 19:40:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 2432bdcaa652f864d91feec423f13fe6 SHA-1: ee0ba6244bb3d8b79a18b3c0e48a683410bc7881 SHA-256: 271ae07f41db85fce767a57cf28b7475a25e2518657a8d375e4af180d0b71d3d
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as Pdf.Phishing.Trojan. The presence of an external URI pointing to 'lozipotod.ru' suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a phishing or malware distribution attempt, likely initiated via spearphishing.

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://lozipotod.ru/123?utm_term=blank+december+calendar+template+2019 PDF link annotation
    • https://cdn.sqhk.co/nikazurokuv/DUEdfhb/iphone_wifi_analyzer_app_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vasibejovej/hjeggKe/ramup.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447912/normal_5fcde24422e0d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423452/normal_600b8e5d255c2.pdfIn PDF document text
    • https://cdn.sqhk.co/zebenane/vjhigj3/activex_control_for_windows_xp_professional.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499984/normal_5feccfba9ea4a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375076/normal_60515c559a601.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/fhvjazg/php_html_code_editor_online.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/vebenok/how_to_do_a_checklist_observation_in_childcare.pdfIn PDF document text
    • https://s3.amazonaws.com/xakajoziwibi/cisco_catalyst_2960-_x_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/latest_android_version_in_smart_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/xozagapesiwokeziseseta.pdfIn PDF document text
    • http://peworesafasar.epizy.com/budapest_club_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/50e75a51-c43a-405d-9b88-746acc825b6f/pathfinder_2e_advanced_race_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11f5c703-4437-424a-aca9-528589250eaf/how_many_letters_in_egyptian_hieroglyphics.pdfIn PDF document text
    • https://s3.amazonaws.com/xezonijida/brezplani_antivirusni_program_za_android.pdfIn PDF document text
    • http://sifuxugod.epizy.com/ejemplo_de_proyecto_de_investigacion_accion.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0172225-917c-41c4-8951-30ce5304dbde/bulova_precisionist_96b175_battery.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_off0000ed03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED03 5776 bytes
SHA-256: eccc84bc8230639b00a3a17fa17aeefd49a2db7c542a6ac3ae4ecac9ac7fd78e
font_01_sfnt_off00010095.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10095 10128 bytes
SHA-256: 426baeeebb0759502908abea44f688faf5078f590e22cb0a1185ac9094708b27

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