Malicious PDF — malware analysis report

Static analysis result for SHA-256 28d298a542e32f5f…

MALICIOUS

PDF

118.0 KB Created: 2020-12-15 05:55:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b3fd9a42fd975cf360ebea4434376810 SHA-1: 9c6c3255fee22f64f29318dc7dd810d22341780f SHA-256: 28d298a542e32f5f3a4b710f0bb8c25ddb7decc385a82e25677b05f60479bf9c
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, appears to be a lure related to 'Scott hall net worth 2018', suggesting a phishing or scam attempt. The presence of numerous external links, including a redirector, points towards an attempt to drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gettraff.ru/123?utm_term=scott+hall+net+worth+2018 In PDF document text
    • https://novafonofijufi.weebly.com/uploads/1/3/4/4/134480525/edba97309261.pdfIn PDF document text
    • https://korebamo.weebly.com/uploads/1/3/0/7/130739662/gexij_jowejujin.pdfIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0c666116eb00e3c4b5099/t/5fd19d42071bbc68802614c7/1607572802465/911_turbo_s_drag_race.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53a22bd14ff0dd2b8f5f8/t/5fcdf7b9978da30c5621d559/1607333818175/management_information_systems_salary_in_us.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f904510-1785-4164-95ba-0cebae905c3f/wupumapov.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f33f2cf09257bd6c4f7e/t/5fc229217acac6192a09c075/1606560033668/black_and_decker_digital_advantage_iron_error_messages.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc392da27a199023ac63631/t/5fce4bd69aa2de0c64c2a524/1607355350684/zcube_3d_rts_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c37c28e7-7f45-4302-a43b-fc69c30a3902/division_box_method_worksheet_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0d52e3dfdd95b60d4bb65/t/5fc148603c02f22b9d3c4ef5/1606502507847/download_pixel_gun_3d_mod_apk_16.1.2.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/97294775057.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58be1e5c7695ca9bb0521/t/5fc79b5e56cd4459b3bd53ae/1606916959611/mumonosabujikulonosal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a463b189-81bf-4d38-8b62-85009b139ebd/fun_math_worksheets_for_second_graders.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e88b8139af0376454bd0/t/5fc1f34f173fb5383be84f4e/1606546256159/sojixuwiwazejawipafeluv.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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000178e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x178E6 15476 bytes
SHA-256: 9d63784bbc0b23481a551991b1c189824d0e67c1c9f9ad4a4853afd7e0a42533
font_00_sfnt_off0001666e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1666E 5424 bytes
SHA-256: 7bb278fa4dace364522f2248748bfc19d71fcf60732799c6d1e699d83b9b07c7
font_02_sfnt_off0001a2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A2DC 11652 bytes
SHA-256: 3f249fdc44dff501a2d19e0b454fdcd6c3b22d288a48f1ddb5a6e9d457d4b1d5

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