Malicious PDF — malware analysis report

Static analysis result for SHA-256 9299e6d7f8969cec…

MALICIOUS

PDF

88.0 KB Created: 2021-03-16 10:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0134cd69efd2277ac167f0aff6e58674 SHA-1: 28bc897db86c81b08d5ab525df975f21a9f5426a SHA-256: 9299e6d7f8969cec3e2d16732a02a5e4dee6ba55e7377c430da89e50f3aeec3c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm, indicating a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains keywords related to search queries, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/wix?keyword=order+of+operations+real+world+problems PDF link annotation
    • http://xenejesujotolud.mypressonline.com/mebadoriganexu.pdfIn PDF document text
    • https://cdn.sqhk.co/jelasusoved/iaBbojc/remote_control_led_strip_lights_battery.pdfIn PDF document text
    • http://gijofabenetawix.66ghz.com/34952965307.pdfIn PDF document text
    • https://cdn.sqhk.co/letopoto/ejhXhcU/snapchat_stock_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/dopiporajen/7jjheSr/starfish_sushi_vermont_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/moxelutedoje/hs3l5jf/62585411379.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/ggiie1r/kobixumupu.pdfIn PDF document text
    • https://cdn.sqhk.co/guposidum/gcghia4/xbox_series_s_vs_xbox_one_s.pdfIn PDF document text
    • https://cdn.sqhk.co/pesamelez/y5jbr1J/halloween_face_mask_amazon_uk.pdfIn PDF document text
    • http://kuzojud.66ghz.com/relative_clauses_worksheet_grade_5.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/how_to_start_a_business_electrical.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://jelomasulavi.atwebpages.com/3166251112.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/65667046478.pdfIn PDF document text
    • http://midofel.rf.gd/free_autocad_viewer_software.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubatebedoxez/how_to_use_sms_on_iphone_4.pdfIn PDF document text
    • http://sokexodine.rf.gd/wimofuju.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/convert_html_to_python_3.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/20387527786.pdfIn PDF document text
    • https://s3.amazonaws.com/zafaronivaj/sokabimubodeto.pdfIn PDF document text
    • http://pivimufe.atwebpages.com/prologue_to_the_canterbury_tales.pdfIn PDF document text
    • http://wesokojoposad.epizy.com/tukabomibunobavezawurotoj.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010363.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10363 5448 bytes
SHA-256: d1118b0465b066812f29425a89de3099d33dd5551f16e37463320c4fe054f0e7
font_01_sfnt_off000115dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115DC 11040 bytes
SHA-256: d91fc3e0666c12ce16fa6fc4b394afe435b33b23af73313d66929b3ddf0d8f3a
font_02_sfnt_off00013b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13B65 16116 bytes
SHA-256: 1ba6c5c9b9182c91372a9de1fe9db7c664f8a8fe33e0723aad4a3f763c3d3616

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