Malicious PDF — malware analysis report

Static analysis result for SHA-256 47aeaf02fc4baf22…

MALICIOUS

PDF

90.3 KB Created: 2021-03-25 20:37:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 78783b24d359c10c47d305481972ae03 SHA-1: 0f04f92e8c2b42adedd3615253f884ea79891ff9 SHA-256: 47aeaf02fc4baf229ba436cd400e37110de6f7f828c83782a77b58a26c653378
156 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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
  • 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.
  • 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://botokaw.ru/award?keyword=inherited+bleeding+disorders+pdf PDF link annotation
    • http://websporizle4.com/fifty_shades_darker_movie_download_720p_dual_audiottldg.pdfIn PDF document text
    • http://present-mag.ru/lebiwexvzptv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368230/normal_603855cc7bd69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424400/normal_5fd8bf62244a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4467036/normal_5fd2174687c27.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_604a9edd515d5.pdfIn PDF document text
    • http://cleaner-inn.club/vegevimonefutugobugiy.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://59bb578d-b312-442a-858b-1a1a54b18a6c.filesusr.com/ugd/c79b1c_596bac16746641d4839247ab6b8be7af.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wetowuzuxit/bmw_x3_2019_owners_manual.pdfIn PDF document text
    • https://e321b6f2-2a0a-4c58-8c60-26baf46d82f1.filesusr.com/ugd/14900c_49a4f70553494a4cb02bf244a93a4e50.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/dedupipisikepewotafutukis.pdfIn PDF document text
    • https://s3.amazonaws.com/jowutoneranemuk/update_sql_server_database_from_excel_spreadsheet.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/guided_by_voices_lyrics_game_of_pricks.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/sajosibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abdca327-3b21-4792-902f-72fa7eb3e990/3943202796.pdfIn PDF document text
    • https://s3.amazonaws.com/lofese/40468815088.pdfIn PDF document text
    • https://s3.amazonaws.com/pigolo/deductive_reasoning_book.pdfIn PDF document text
    • https://9fbeb193-358d-48fe-b9d9-45f8b63f6b3c.filesusr.com/ugd/ab67b9_e336bc84c29c4720b0f19e7eb6480a72.pdf?index=trueIn PDF document text
    • https://37bdae34-bb2f-403f-997c-54a7c09d9c06.filesusr.com/ugd/dc98cc_4e3680d27dc243e2b21aa939acf59ab4.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd5b7e95-32d0-4c3a-a477-a95feef07a33/pioneer_avic_5000nex_installation_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/cool_fonts_for_instagram_pro_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/setigafat/font_awesome_4._7_icons.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

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFD5 4956 bytes
SHA-256: eb1e4a8b73a5f8af082b19f89c65f4904561df66409ffb4a3219d68a12070520
font_01_sfnt_off0000f090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF090 3720 bytes
SHA-256: 6539b129c5cd894636dc8f40f53a156c00c8f46378ab4f137c96d687a1cff6ed
font_02_sfnt_off0000fbf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF3 11196 bytes
SHA-256: e99d71ac40a5b203e0d242b57fe4b46407125e2a4053b16c9452df3c1c0eaf10
font_03_sfnt_off00012188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12188 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
font_04_sfnt_off00012f89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F89 13848 bytes
SHA-256: 987479cbab821453c55aed6550083f521123e336fb55d05101403452032347c6