Malicious PDF — malware analysis report

Static analysis result for SHA-256 abeb7d1f8142ecde…

MALICIOUS

PDF

74.7 KB Created: 2021-03-08 22:39:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a579915868d57d7713b6b6ff7be47a54 SHA-1: f21434aa3b87db28cf8793dd92de05560129cb9b SHA-256: abeb7d1f8142ecde3dba86401d20706efe04746d1e6ef6cb730a6d9bb1284120
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM', with one prominent URL being https://druttle.ru/123?utm_term=pulsar+150+hd+pic. This suggests the document's primary purpose is to redirect users to potentially harmful or deceptive websites, possibly for phishing or SEO spam.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://druttle.ru/123?utm_term=pulsar+150+hd+pic PDF link annotation
    • https://cdn.sqhk.co/wanazofemuvu/jcnn0da/apple_music_artist_account_login.pdfIn PDF document text
    • https://xowasesulozuvuv.weebly.com/uploads/1/3/5/3/135347394/gunesurazidos_sewotoxeko.pdfIn PDF document text
    • https://cdn.sqhk.co/nodepitow/Jid6giw/66510245785.pdfIn PDF document text
    • http://wajuxerisowo.iblogger.org/sugar_company_share_market_list.pdfIn PDF document text
    • https://fugikoji.weebly.com/uploads/1/3/4/6/134611078/nakubin_givifelazojine.pdfIn PDF document text
    • https://cdn.sqhk.co/luwesefizi/jekridD/68315825544.pdfIn PDF document text
    • https://cdn.sqhk.co/guzowozuk/lIdkhdu/herobrine_mod_minecraft_java.pdfIn PDF document text
    • https://cdn.sqhk.co/fijumirana/jjzihTz/34289652255.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/74fc5388-5a49-4a33-9953-de67c295b5e3/que_significa_la_m_en_los_diccionarios.pdfIn PDF document text
    • http://gazonenewotife.epizy.com/74499324384.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b86eabd8-dd42-4e8b-bdb6-2ce4c5a9efa1/dekebatuvizom.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/cavernous_venous_malformation_icd_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e668a82f-ff9c-4bbc-8d3a-ec3e1e01b5d0/pl_sql_developer_portable_download_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a745dd96-1119-46d2-8fd9-d3c63b4b6f2d/barney_stinson_bro_code_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/area_of_a_rectangle_and_parallelogram_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/180aa604-c7e6-4249-a47c-505e9b9b161d/rezifajafipozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb592f72-e023-4fc8-8945-a6b07e111023/who_is_nadya_in_the_tattooist_of_auschwitz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1bca437-5efd-4111-8b95-e1048816374f/44194516757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8c1ab6b-56b3-467d-a383-a33b0a709825/first_alert_co400_expiration_date.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_off0000cf0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF0C 5480 bytes
SHA-256: 0d8d4213d5043852fe003a30c0dd98415a2ac44e7eadbbe05670fe51f12275c3
font_01_sfnt_off0000e1ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AC 11480 bytes
SHA-256: 661f75b0471169f2e7ae8438e8a0e18e95639c7b5b796f3f6101d2e2ee69f564
font_02_sfnt_off000106fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106FA 16164 bytes
SHA-256: c41fc46809d2260d2d1a821cef6bb00dae560fdbad380da94a93f29d012df54e

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