Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd192ce09e4c01b9…

MALICIOUS

PDF

79.5 KB Created: 2020-12-11 09:17:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7b30810bd6e13db114d5a45037a7087d SHA-1: dad0ec7e56dd98895646373dbdc8fdca9af9c2da SHA-256: bd192ce09e4c01b9c25496635d699fee2e902f991b65c6ba727994913f25fea2
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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
  • 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://cctraff.ru/123?utm_term=pokemon+silver+character+fan+art In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368251/normal_5f9813cbbc5c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393018/normal_5fbd72a887369.pdfIn PDF document text
    • https://ribuborufexegax.weebly.com/uploads/1/3/4/5/134507127/ca22254aeb3bf5.pdfIn PDF document text
    • https://dusomekekonipa.weebly.com/uploads/1/3/4/5/134580960/12181a132fe.pdfIn 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/5fbce344be7cfc36344e8aaf/t/5fbd04b09d104e5f152edd7b/1606223025384/doranedetixanewirazuti.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e1448ef7301f8b1097bc/t/5fc37ee7e18c5c478e6860a8/1606647530239/what_does_samcro_in_sons_of_anarchy_mean.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f572e9fc3622d52f966f/t/5fc7878656cd4459b3bb4d28/1606911878459/math_magic_tricks_and_methods.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce96f7d750663734494f77/t/5fd22ba3071bbc6880344d3e/1607609252955/47677373857.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc789945426f52a30df8d2d/t/5fce796f54f0b211011e6340/1607367023959/novujejotumofisewufaneg.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2b5fd0a2757459beea4f4/t/5fc5bd67173fb5383b6a3acb/1606794599851/42989317094.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/241b349b-621a-4e10-8148-197eeb237031/90797560262.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcf90a9d104e5f152d7cb6/1606220055564/tv_tropes_terminator_sarah_connor_chronicles.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc51b41405d5340f344d674/t/5fc959e4181acf12b832030d/1607031268917/ricetta_caponata_siciliana_con_peperoni.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6bca0aa0dc1643a2ca0c5/t/5fccb948d336b863f0befd3f/1607252297085/chuchel_game_free_download_android.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1bb67bdb33045eec822d5/t/5fd051706cbf29106bf8e852/1607487857941/tamil_christian_sunday_school_songs_free_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56b47bdb33045eee083c1/t/5fc7cbc5d9e12858b402b0f0/1606929354766/57860410478.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0fb3040f1034a5ca93bca/t/5fc744b056cd4459b3b5680f/1606894770326/how_do_u_say_hey_in_chinese.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e08acba4-6901-4efe-ae0a-2e87dac0ff5e/xefipiv.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dadf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDADF 8396 bytes
SHA-256: 2bf9c9fee8bd5ff44a65f95285b5995ffa6a4fb0cd225e1737495f8aecf3a1f4
font_01_sfnt_off0000f745.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF745 5248 bytes
SHA-256: 6a0e87416e66b75ea261f072857ab89cd3648e534dffbc909554a94ff9430d0c
font_02_sfnt_off00010901.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10901 11772 bytes
SHA-256: e76da49187989e0590e42acbc346fc4668b3f692dea43516610b7316e6db5b29