Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d498e90d842cdac…

MALICIOUS

PDF

48.9 KB Created: 2020-10-10 20:23:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-25
MD5: 53b2131c7306e6ce72827de3fe97f46b SHA-1: b1204ad402ca9d05bbe9c2367f65dd23954d5ef9 SHA-256: 7d498e90d842cdac333b653f00bfa1d13acc4775fce61bda14d6bb8938d17c67
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ttraff.cc/pify?keyword=keller%2527s+flea+market+shooting In PDF document text
    • http://files.monroecounty2020.com/uploads/1/3/0/8/130873708/7560252.pdfIn PDF document text
    • http://sutojozav.loudluggageco.com/uploads/1/3/1/8/131871710/a5fb17dcb.pdfIn PDF document text
    • http://lavopus.kerrywanamaker.com/uploads/1/3/2/6/132680874/wizabunusuz.pdfIn PDF document text
    • http://jexotuwuf.timdewittphotography.com/uploads/1/3/0/9/130969432/tuviba.pdfIn PDF document text
    • https://site-1043259.mozfiles.com/files/1043259/goronitotufepukevazaw.pdfIn PDF document text
    • https://site-1043437.mozfiles.com/files/1043437/jozuzotobupamaripelirila.pdfIn PDF document text
    • https://site-1037865.mozfiles.com/files/1037865/60793232156.pdfIn PDF document text
    • https://site-1040350.mozfiles.com/files/1040350/gakuxekatojopisa.pdfIn PDF document text
    • https://site-1038372.mozfiles.com/files/1038372/6917303057.pdfIn PDF document text
    • https://site-1036924.mozfiles.com/files/1036924/mabev.pdfIn PDF document text
    • http://zepile.ggcva.org/uploads/1/3/0/8/130874161/3677438.pdfIn PDF document text
    • http://files.anewleaf4you.com/uploads/1/3/2/8/132814007/f215f425e8f.pdfIn PDF document text
    • http://wozameju.nourishnotdiet.com/uploads/1/3/1/4/131482812/memow-tivawarijurele-puguga.pdfIn PDF document text
    • http://files.pashminaforme.co.uk/uploads/1/3/1/4/131407511/4211740.pdfIn PDF document text
    • http://files.chertsey.school.nz/uploads/1/3/1/8/131856160/wojijepukol.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://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_off0000743d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x743D 5036 bytes
SHA-256: 7007a5265b5b57195599627db10a7ce53b535a5893d2da70219ff8271f8bbcdc
font_01_sfnt_off00008536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8536 10260 bytes
SHA-256: 60524b7665f82ffb7c054385af878ed9ce7ab5d5b5342b6ae844851bdce5656b
font_02_sfnt_off0000a849.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA849 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176