Malicious PDF — malware analysis report

Static analysis result for SHA-256 093323ccbfe6d330…

MALICIOUS

PDF

78.7 KB Created: 2021-03-23 22:02:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a68489a55c86388f4aff8302757297be SHA-1: 7f56ac74c0dfb91cbd81f65b42ecd6bd207f6709 SHA-256: 093323ccbfe6d33002e5e0ff17c195e4884a6406fd94541aeb1d8827cdac6aec
126 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, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with one pointing to 'fokemale.ru', suggesting a phishing or malware distribution attempt. The PDF structure and the presence of external URIs are indicative of a common phishing lure, likely designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://fokemale.ru/123?utm_term=dragon+ball+z+dokkan+battle+android+republic PDF link annotation
    • http://discout.online/gujolewuvoc7i.pdfIn PDF document text
    • http://probnik1313.tech/champions_online_convert_archetype_to_freeform0thju.pdfIn PDF document text
    • http://xubajur.mygamesonline.org/95354413329.pdfIn PDF document text
    • http://meine-gebuhrenfrei.com/treasurer_report_sample8zzat.pdfIn PDF document text
    • http://idealslim-italiaofficial.site/kepuzubufalinuwifux2slcz.pdfIn PDF document text
    • http://tactical-jacket-sale.shop/ascii_code_definitionrdlih.pdfIn PDF document text
    • http://freshka.fun/harry_potter_characters_read_the_goblet_of_fire_fanfictiongwt8i.pdfIn PDF document text
    • http://islemleriniz.org/torchlight_2_mod_launcher_fix_update_1443qc6.pdfIn PDF document text
    • http://mirror-x.org/effects_of_stress_on_academic_performance70t4q.pdfIn PDF document text
    • http://mmamba.ru/wixizifofopirexojutoascg.pdfIn PDF document text
    • http://trysoda.club/why_is_my_yeti_microphone_not_workingp3moe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbe5ea0f-a662-45ce-9552-656bd117f7c6/no_te_metas_conmigo_por_favor_en_ingles.pdfIn PDF document text
    • http://rofuvawitarul.atwebpages.com/bangladesh_road_map_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/814a5a09-c9f4-4beb-8146-92e13bbe1dcc/53062276596.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c73731e-2e21-4884-a310-9568378dffaf/66710928986.pdfIn PDF document text
    • https://ddb281da-11d2-423e-b83a-408ecf1f607f.filesusr.com/ugd/9db61c_a1cfcc2c7d6447debc2c49683f155eff.pdf?index=trueIn PDF document text
    • https://6762652a-e869-40f3-960d-1446d4066230.filesusr.com/ugd/55e6b1_b9c88d06b6f14d469790ba4b03a506f9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/5479bef8-0537-4453-b60a-ca1458e38a45/whirlpool_gold_dishwasher_fault.pdfIn PDF document text
    • https://03f57db0-fbcf-46ec-8713-21b5992b8512.filesusr.com/ugd/455f95_42334b9b740c4dff99651987aac5f70f.pdf?index=trueIn 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_off0000e37c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE37C 4856 bytes
SHA-256: 819b94718cb29fdca49dafbee89a6e39310545ec96042ebf4ec81f614a0ef5bd
font_01_sfnt_off0000f455.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF455 5316 bytes
SHA-256: 698b22c60287e16154219ace74ad9edf34a679713cf216a997ce008e04482d79
font_02_sfnt_off00010687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10687 11272 bytes
SHA-256: fd282827606aa33e56989fa236cd834868fb0e8bd0c4f17216f331a21ba9ebc9

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