Malicious PDF — malware analysis report

Static analysis result for SHA-256 737e02976c4344a1…

MALICIOUS

PDF

51.0 KB Created: 2020-04-03 16:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2021-04-10
MD5: 4ebbd64d7e912d524318575fff709b66 SHA-1: ff53f2fdc5e56f7d3609552aa743c1336eeb0d62 SHA-256: 737e02976c4344a156690b014dcb36eba8613168b40afc808abc5ade2c3a79b2
96 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 http://maisconsultoria.net/uploads/1/3/0/3/130379058/130379058.html#anatomy+of+the+spirit+free+download PDF link annotation
    • http://jumpropeworks.com/uploads/1/3/0/9/130969329/57219dd0f68.pdfIn PDF document text
    • http://communication4us.com/uploads/1/3/0/6/130603966/sirawo.pdfIn PDF document text
    • http://journeymentalhealth.org/uploads/1/3/0/3/130323236/6842598.pdfIn PDF document text
    • http://seacoastconsultingllc.com/uploads/1/3/1/3/131380320/mofokinin_pupazaj.pdfIn PDF document text
    • http://katevonteschen.org/uploads/1/3/0/6/130603748/7113844.pdfIn PDF document text
    • http://fancibaking.com/uploads/1/3/0/6/130640088/913788.pdfIn PDF document text
    • http://euro-trader.com/uploads/1/3/0/7/130740508/76a3fb7bda702d0.pdfIn PDF document text
    • http://megadethslot.com/uploads/1/3/0/5/130550770/gununudutem.pdfIn PDF document text
    • http://davethurman.org/uploads/1/3/0/2/130291527/aadc68b7e4.pdfIn PDF document text
    • http://seatideproductions.net/uploads/1/3/0/5/130589223/bafanatibaduf_sexanexe_posevipusob.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn 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_off0000796b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x796B 6552 bytes
SHA-256: 620fd8b4e258fac3dc02a4e15bf840a58c124fa93f329b2a87a1f4b008c62834
font_01_sfnt_off0000898e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x898E 8040 bytes
SHA-256: 574daa330d07d4b7efbe6bd96fb514e4bbdbd7585d6422997ec8dd67b5f72956
font_02_sfnt_off0000a89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA89A 16204 bytes
SHA-256: f31c439e28d0137206b91a151f21343900f846ed9ff070250fbe82eb1cc7da1d

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