Malicious PDF — malware analysis report

Static analysis result for SHA-256 99078a66805889ed…

MALICIOUS

PDF

160.2 KB Created: 2020-11-24 06:30:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 07073637db3708590b313dd267d9fe9d SHA-1: b4b9774b46fe4773af4ef04740709802aa2958be SHA-256: 99078a66805889ed177f743e9abf633684dc6aa73d489284e556b6f6991e6fda
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://cctraff.ru/strik?utm_term=numenera+player+s+guide'. This indicates the document's primary purpose is to lure the user to this malicious site. The ML classifier also flagged the PDF with high confidence. No scripts were extracted, but the presence of a malicious URL strongly suggests a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9034

Heuristics 4

  • 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.
  • 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://cctraff.ru/strik?utm_term=numenera+player+s+guide In PDF document text
    • https://moxitasa.weebly.com/uploads/1/3/1/4/131454719/2284198.pdfIn PDF document text
    • https://nupejaxisolerez.weebly.com/uploads/1/3/4/3/134348845/budasolatipone.pdfIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.indictrans.orgIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee52cb9a-a52e-4ceb-a24e-1bb06687dbb8/xiforedilig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04c32101-f829-4b24-935f-3532fb2f58b4/xem_phim_angry_mom.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/collier_county_school_calendar_2020_21.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/hurt_feelings_report_printable_word_doc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01e38cf1-44c1-4149-8d7b-3de74dc3e941/crossroads_and_cultures_volume_2.pdfIn PDF document text
    • https://s3.amazonaws.com/mesotodimus/39895659743.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/devigem.pdfIn PDF document text
    • https://s3.amazonaws.com/xurixado/ahad_nama_arabic.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/astm_a193_standard_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21624d20-0073-41a1-985e-c24d4158eb4b/forge_items_mk11.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://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 11

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00014c2b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x14C2B 11472 bytes
SHA-256: 7dfb06f9ed922b36ded56cae8be44a9cd8f3d6b0787ae2d09db74f3414f5c01e
stream_007_off00018272.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18272 14608 bytes
SHA-256: 003b9e0e90a8362f75c99081acf1dad259b8c8c17bd8edc1bdb915eb30c937c6
font_00_sfnt_off00012fcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FCC 2888 bytes
SHA-256: ba2356565adfbad3bce05071f499e58eec20abd0a5d273d6699ec2874c27599c
font_01_sfnt_off00013a0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A0F 5348 bytes
SHA-256: 6ba3c20c4e1325520ebd9dbc375cd3832d0f907993773ea0d47b51b9bb0cd38c
font_03_sfnt_off00016867.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16867 7996 bytes
SHA-256: 9d8ee72795132a72802429918caa901e7c84eecf456e717c5d10c46a121f8249
font_05_sfnt_off0001a66c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A66C 5448 bytes
SHA-256: 5a71c2862287e48fd391612d4e2a9d4c93aeb7d65ba373c56498ba4c8e82f71a
font_06_sfnt_off0001ba5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BA5D 14140 bytes
SHA-256: c7806be8618fd7f1a706d75825a53b52ca119aee9e2835f696cc0c72bb2fdfc2
font_07_sfnt_off0001de22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DE22 8000 bytes
SHA-256: 6aa54eeafdc7fffcce1a6cd7fc9d4c46a397b31cf6a8c6e8cea2b8233c338476
font_08_sfnt_off0001f862.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F862 17820 bytes
SHA-256: db3ad1a5bb5cf450570962639d931cbec33726534a8db3b8a0f690815ebc744b
font_09_sfnt_off00022e30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22E30 21764 bytes
SHA-256: 0255d3aafdb1268224cefea4d6af72b5209ab434c11c4bd825cf49c9f62a6b22
font_10_sfnt_off00025374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25374 8648 bytes
SHA-256: c71d44ed8c2acff3811f99bc0514a9f80a6e39e07a741ba8342558c3f80f8dfa

Open this report in the interactive analyzer, or submit your own file for analysis.