Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0dccfd2dcc25902…

MALICIOUS

PDF

53.6 KB Created: 2020-10-04 01:07:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1168cdd677c2e8d4c7c06a7838ebd3e4 SHA-1: 6d15ccdc6fa60694b3cad14227f374063aeeedb0 SHA-256: d0dccfd2dcc25902583b3828d997fb6d4e0291dbaf051d7f7330df79ac48612f
192 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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?keyword=mudra+loan+application+form+sbi+pdf In PDF document text
    • http://nakujusi.andersonhealthscience.com/uploads/1/3/1/4/131453501/ragegomusefogi.pdfIn PDF document text
    • http://runinukan.makooutfitters.com/uploads/1/3/2/3/132302921/tamozefozozijo.pdfIn PDF document text
    • http://jewaraso.d-aleksandar.com/uploads/1/3/1/8/131856072/7fe695da2346.pdfIn PDF document text
    • http://files.lvcwellsford.co.nz/uploads/1/3/1/4/131453188/piwaxik.pdfIn PDF document text
    • http://files.sohappytolearn.com/uploads/1/3/1/4/131453817/naburivivexu.pdfIn PDF document text
    • http://files.lotzmusic.com/uploads/1/3/0/9/130969939/togizidixaj_wigixopekonop_lofurosanakujuv_xexefikiref.pdfIn PDF document text
    • http://files.twiggsconsulting.com/uploads/1/3/0/8/130814124/7290dba99.pdfIn PDF document text
    • https://site-1037214.mozfiles.com/files/1037214/56868255068.pdfIn PDF document text
    • https://site-1040215.mozfiles.com/files/1040215/49156364207.pdfIn PDF document text
    • https://site-1043765.mozfiles.com/files/1043765/jisibukogamawibu.pdfIn PDF document text
    • https://site-1037849.mozfiles.com/files/1037849/doxupuxuzubimubom.pdfIn PDF document text
    • https://site-1036627.mozfiles.com/files/1036627/5288546382.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn 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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000067de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DE 5448 bytes
SHA-256: 31de1141757f160bb6e36312cd3d5f9f90b493a4824325f18b91806bcbfeb893
font_01_sfnt_off00007a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A53 10376 bytes
SHA-256: b43e7bcfcdcf48e5045eeb201fd311e1e39447aadca2aec5ac0a49b1a41ba23a
font_02_sfnt_off00009df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DF4 16164 bytes
SHA-256: 6e3fbd491d8b71441998836ddca0d0c102716a221ea14f8143929167ad9a79b3
font_03_sfnt_off0000b345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB345 5984 bytes
SHA-256: 42a2d8072dcff318ce0841778b42f5c0cccb61bd5ba43f1365afdc5cb294696a